https://www.unicode.org/Public/emoji/ReadMe.txt

> This directory contains data files for versions 1.0 to 16.0 of Unicode Emoji.
> Starting with Unicode 17.0.0, the data files for Unicode Emoji are published in
> https://www.unicode.org/Public/<version>/emoji/
> together with the related files in
> https://www.unicode.org/Public/<version>/ucd/emoji/

The change in the Unicode emoji file header took place at
version 14.0.0, but is needed only from version 15.0.0
because in version 14.0.0, another check is still active.

Should fix issues with parallel testing sometimes not running all
tests.

This should be viewed skipping whitespace changes.

Fixes [Bug #18731]

This reverts commit 48f1e8c5d85043e6adb8e93c94532daa201d42e9.

This reverts commit fc6e4ce62bfa95b6a0d4d4898e1128c1fce4db8a.

With `make update-unicode`, some tests failed with the following error
due to header mismatch.

* `RbConfig::CONFIG['UNICODE_EMOJI_VERSION']` => 14.0
* the header line is `# emoji-variation-sequences-14.0.0.txt`

So the last `.0` is mismatch.
This patch allows additional `.0` in the header line.

Please revert this patch when a correct patach is merged.

```
  1) Error:
TestEmojiBreaks#test_embedded_emoji:
RuntimeError: File Name Mismatch: line: # emoji-variation-sequences-14.0.0.txt, expected filename: emoji-variation-sequences.txt
    /tmp/ruby/v3/src/trunk/test/ruby/enc/test_emoji_breaks.rb:88:in `block (2 levels) in read_data'
    /tmp/ruby/v3/src/trunk/test/ruby/enc/test_emoji_breaks.rb:82:in `foreach'
    /tmp/ruby/v3/src/trunk/test/ruby/enc/test_emoji_breaks.rb:82:in `block in read_data'
    /tmp/ruby/v3/src/trunk/test/ruby/enc/test_emoji_breaks.rb:79:in `each'
    /tmp/ruby/v3/src/trunk/test/ruby/enc/test_emoji_breaks.rb:79:in `read_data'
    /tmp/ruby/v3/src/trunk/test/ruby/enc/test_emoji_breaks.rb:111:in `all_tests'
    /tmp/ruby/v3/src/trunk/test/ruby/enc/test_emoji_breaks.rb:127:in `test_embedded_emoji'
  2) Error:
TestEmojiBreaks#test_mixed_emoji:
RuntimeError: File Name Mismatch: line: # emoji-variation-sequences-14.0.0.txt, expected filename: emoji-variation-sequences.txt
    /tmp/ruby/v3/src/trunk/test/ruby/enc/test_emoji_breaks.rb:88:in `block (2 levels) in read_data'
    /tmp/ruby/v3/src/trunk/test/ruby/enc/test_emoji_breaks.rb:82:in `foreach'
    /tmp/ruby/v3/src/trunk/test/ruby/enc/test_emoji_breaks.rb:82:in `block in read_data'
    /tmp/ruby/v3/src/trunk/test/ruby/enc/test_emoji_breaks.rb:79:in `each'
    /tmp/ruby/v3/src/trunk/test/ruby/enc/test_emoji_breaks.rb:79:in `read_data'
    /tmp/ruby/v3/src/trunk/test/ruby/enc/test_emoji_breaks.rb:111:in `all_tests'
    /tmp/ruby/v3/src/trunk/test/ruby/enc/test_emoji_breaks.rb:139:in `test_mixed_emoji'
  3) Error:
TestEmojiBreaks#test_single_emoji:
RuntimeError: File Name Mismatch: line: # emoji-variation-sequences-14.0.0.txt, expected filename: emoji-variation-sequences.txt
    /tmp/ruby/v3/src/trunk/test/ruby/enc/test_emoji_breaks.rb:88:in `block (2 levels) in read_data'
    /tmp/ruby/v3/src/trunk/test/ruby/enc/test_emoji_breaks.rb:82:in `foreach'
    /tmp/ruby/v3/src/trunk/test/ruby/enc/test_emoji_breaks.rb:82:in `block in read_data'
    /tmp/ruby/v3/src/trunk/test/ruby/enc/test_emoji_breaks.rb:79:in `each'
    /tmp/ruby/v3/src/trunk/test/ruby/enc/test_emoji_breaks.rb:79:in `read_data'
    /tmp/ruby/v3/src/trunk/test/ruby/enc/test_emoji_breaks.rb:111:in `all_tests'
    /tmp/ruby/v3/src/trunk/test/ruby/enc/test_emoji_breaks.rb:117:in `test_single_emoji'
```

http://ci.rvm.jp/results/trunk-no-mjit@phosphorus-docker/3870646
```
  1) Error:
	TestEmojiBreaks#test_single_emoji:
	RuntimeError: File Name Mismatch: line: # emoji-variation-sequences-14.0.0.txt, expected filename: emoji-variation-sequences.txt
	    /tmp/ruby/v3/src/trunk-no-mjit/test/ruby/enc/test_emoji_breaks.rb:84:in `block (2 levels) in read_data'
	    /tmp/ruby/v3/src/trunk-no-mjit/test/ruby/enc/test_emoji_breaks.rb:82:in `foreach'
	    /tmp/ruby/v3/src/trunk-no-mjit/test/ruby/enc/test_emoji_breaks.rb:82:in `block in read_data'
	    /tmp/ruby/v3/src/trunk-no-mjit/test/ruby/enc/test_emoji_breaks.rb:79:in `each'
	    /tmp/ruby/v3/src/trunk-no-mjit/test/ruby/enc/test_emoji_breaks.rb:79:in `read_data'
	    /tmp/ruby/v3/src/trunk-no-mjit/test/ruby/enc/test_emoji_breaks.rb:105:in `all_tests'
	    /tmp/ruby/v3/src/trunk-no-mjit/test/ruby/enc/test_emoji_breaks.rb:111:in `test_single_emoji'
	  2) Error:
	TestEmojiBreaks#test_mixed_emoji:
	RuntimeError: File Name Mismatch: line: # emoji-variation-sequences-14.0.0.txt, expected filename: emoji-variation-sequences.txt
	    /tmp/ruby/v3/src/trunk-no-mjit/test/ruby/enc/test_emoji_breaks.rb:84:in `block (2 levels) in read_data'
	    /tmp/ruby/v3/src/trunk-no-mjit/test/ruby/enc/test_emoji_breaks.rb:82:in `foreach'
	    /tmp/ruby/v3/src/trunk-no-mjit/test/ruby/enc/test_emoji_breaks.rb:82:in `block in read_data'
	    /tmp/ruby/v3/src/trunk-no-mjit/test/ruby/enc/test_emoji_breaks.rb:79:in `each'
	    /tmp/ruby/v3/src/trunk-no-mjit/test/ruby/enc/test_emoji_breaks.rb:79:in `read_data'
	    /tmp/ruby/v3/src/trunk-no-mjit/test/ruby/enc/test_emoji_breaks.rb:105:in `all_tests'
	    /tmp/ruby/v3/src/trunk-no-mjit/test/ruby/enc/test_emoji_breaks.rb:133:in `test_mixed_emoji'
	  3) Error:
	TestEmojiBreaks#test_embedded_emoji:
	RuntimeError: File Name Mismatch: line: # emoji-variation-sequences-14.0.0.txt, expected filename: emoji-variation-sequences.txt
	    /tmp/ruby/v3/src/trunk-no-mjit/test/ruby/enc/test_emoji_breaks.rb:84:in `block (2 levels) in read_data'
	    /tmp/ruby/v3/src/trunk-no-mjit/test/ruby/enc/test_emoji_breaks.rb:82:in `foreach'
	    /tmp/ruby/v3/src/trunk-no-mjit/test/ruby/enc/test_emoji_breaks.rb:82:in `block in read_data'
	    /tmp/ruby/v3/src/trunk-no-mjit/test/ruby/enc/test_emoji_breaks.rb:79:in `each'
	    /tmp/ruby/v3/src/trunk-no-mjit/test/ruby/enc/test_emoji_breaks.rb:79:in `read_data'
	    /tmp/ruby/v3/src/trunk-no-mjit/test/ruby/enc/test_emoji_breaks.rb:105:in `all_tests'
	    /tmp/ruby/v3/src/trunk-no-mjit/test/ruby/enc/test_emoji_breaks.rb:121:in `test_embedded_emoji'
	make: *** [uncommon.mk:823: yes-test-all] Error 3
```