[Bug #19350]

* Merge RubyGems-3.4.2 and Bundler-2.4.2

* Merge RubyGems-3.4.3 and Bundler-2.4.3

* Generate parser-text.rb of racc when sync it

* Ignore LICENSE files of libraries vendored in rubygems [ci skip]

* Adjust spec of bundler like as `sync_default_gems` [ci skip]

* Fixed a typo

* Removed vendored LICENSE file.

* Update LEGAL sections for pub_grub

* Merge RubyGems-3.4.4 and Bundler-2.4.4

* Merge RubyGems-3.4.5 and Bundler-2.4.5

Co-authored-by: Nobuyoshi Nakada <nobu@ruby-lang.org>

  from https://github.com/rubygems/rubygems/commit/bfb0ae69776069155d2092702bfbb5a12617d85a

  https://github.com/rubygems/rubygems/pull/5960

  Co-authored-by: David Rodríguez <deivid.rodriguez@riseup.net>

  https://github.com/rubygems/rubygems/commit/6214d00b2315ed37c76b1fbc1c72f61f92ba5a65

https://github.com/rubygems/rubygems/commit/703373b41f

Co-authored-by: Loic Nageleisen <loic.nageleisen@gmail.com>

  Merge from https://github.com/rubygems/rubygems/commit/2af2520b4a7ab1c6eb1fdc3d2ef4d8c062d96ad7

We have two representations of a source. Once used for sorting, which
should not depend on the source's state, but solely on its static
information, like remotes. Another one used for error and informational
messages, which should properly inform about the exact state of the
source when the message is printed.

This commit makes the latter be the default implementation of `to_s`, so
that error and informational messages are more accurate by default.

https://github.com/rubygems/rubygems/commit/b5f2b88957

When printing sources inside these error messages, it's useful to only
consider the current state of the source. For example, when requiring
`bundler/setup`, the source shouldn't be configured to be able to hit
the network, so the error message should only mention "locally installed
gems" to make that more clear.

https://github.com/rubygems/rubygems/commit/30eb14f853