merge revision(s) 548086b34e3dd125edabf5dc1e46b891fad3ea9c,3dc8cde70078ccb38f5f4b0818ad5eecded01bd5,e0cf80d666d4b5df3229f030a16d10d21323508e: [Backport #19529]

	ObjectSpace::WeakMap: fix compaction support

	[Bug #19529]

	`rb_gc_update_tbl_refs` can't be used on `w->obj2wmap` because it's
	not a `VALUE -> VALUE` table, but a `VALUE -> VALUE *` table, so
	we need some dedicated iterator.
	---
	 test/ruby/test_weakmap.rb |  8 ++++++++
	 weakmap.c                 | 37 ++++++++++++++++++++++++++++++++++++-
	 2 files changed, 44 insertions(+), 1 deletion(-)

	Fix crash during compaction

	[Bug #19529]

	The fix for [Bug #19529] in commit 548086b contained a bug that crashes
	on the following script:

	```
	wm = ObjectSpace::WeakMap.new
	obj = Object.new
	100.times do
	  wm[Object.new] = obj
	  GC.start
	end
	GC.compact
	```
	---
	 test/ruby/test_weakmap.rb | 10 ++++++++++
	 weakmap.c                 |  2 +-
	 2 files changed, 11 insertions(+), 1 deletion(-)

	Fix incorrect size of WeakMap buffer

	In wmap_final_func, j is the number of elements + 1 (since j also
	includes the length at the 0th index), so we should resize the buffer
	to size j and the new length is j - 1.
	---
	 weakmap.c | 4 ++--
	 1 file changed, 2 insertions(+), 2 deletions(-)

1 files changed, 1 insertions, 1 deletions

diff --git a/version.h b/version.h
index 9bcaa82d62..114ab90195 100644
--- a/version.h
+++ b/version.h
@@ -11,7 +11,7 @@
 # define RUBY_VERSION_MINOR RUBY_API_VERSION_MINOR
 #define RUBY_VERSION_TEENY 4
 #define RUBY_RELEASE_DATE RUBY_RELEASE_YEAR_STR"-"RUBY_RELEASE_MONTH_STR"-"RUBY_RELEASE_DAY_STR
-#define RUBY_PATCHLEVEL 217
+#define RUBY_PATCHLEVEL 218
 
 #define RUBY_RELEASE_YEAR 2023
 #define RUBY_RELEASE_MONTH 3