Ruby

[DOC] Link github style references in ChangeLog

Use pointer to the member

Instead of the offset calculation.

Remove automatically set environment variables

Probably since macOS Runner Image Version 20251020.XXXX, spawned
processes initialize TMPDIR environment variable under the hood.

Add configured environment variables first

And LD_PRELOAD is set to PRELOADENV on Linux.

Improve performance of UnicodeNormalize.canonical_ordering_one

Use array_of_integer.sort! instead of buble-sort-like algorithm

[DOC] Follow up GH-14470

IS_TYPED_DATA is no longer a flag in type, and the "embedded" flag
has been shifted accordingly.

ruby/ruby#14470

Update default gems list at 226caf1a1f3542d9e39e1a72fb43fd [ci skip]

[ruby/json] Release 2.15.2

https://github.com/ruby/json/commit/5e61cd7dce

[ruby/json] Fix concurrent usage of JSON::Coder#dump

Fix: https://github.com/rails/rails/commit/90616277e3d8fc46c9cf35d6a7470ff1ea0092f7#r168784389

Because the depth counter is inside JSON::State it can't be used
concurrently, and in case of a circular reference the counter may be...

Fix memory leak of transcoding when fallback raises

When the fallback function in transcode_loop raises, it will leak the memory
in rb_econv_t. The following script reproduces the leak:

10.times do
  100_000.times do
    "\ufffd".encode(Encoding::US_ASCII, fallback: proc { raise })...