Bump pg from 1.6.1 to 1.6.3

[dependabot]

Bumps pg from 1.6.1 to 1.6.3.

Changelog

Sourced from pg's changelog.

v1.6.3 [2025-12-29] Lars Kanis lars@greiz-reinsdorf.de

Added:

• Add binary gems for ruby-4.0, now providing ruby-3.0 to 4.0. #682
• Update fat binary gem to OpenSSL-3.6.0 and PostgreSQL-18.1.
• Improve documentation of PG::Result and README. #676
• Update errorcodes to PostgreSQL-18.
• Use rb_hash_new_capa on Ruby-3.2+ . #674
• Deny any server communication on a frozen PG::Connection . #677
• Fix possible race condition in PG::Result in Ractor context. #674

Removed:

• Drop binary gem support for platform x86-mingw32. #682
• Drop binary gems for ruby-2.7.

v1.6.2 [2025-09-02] Lars Kanis lars@greiz-reinsdorf.de

• Remove several absolute paths from native binaries which pointed to build directories. #668
• Fix bad fallback path to pg_service.conf. #666
• Use rbpg_ prefix for base64_* functions to avoid name clashes with functions provided by other libraries like Heimdal on Macos. #667
• Raise a more descriptive error message in case of pg_ext LoadError. #664
• Freeze some constants to make them available in a Ractor context. #660
• Several documentation improvements.
• Update native binary gems to OpenSSL-3.5.2, krb5-1.22.1 and PostgreSQL-17.6.

Commits

• d4539c2 Bump VERSION to pg-1.6.3 and add release notes
• 720900d Merge pull request #682 from larskanis/ruby-4.0
• f605b59 Remove x86-mingw32 from binary builds
• 5c69000 Update to ruby-4.0
• 2acaf3d CI: workaround missing ruby-4.0 on Window
• b500ded fix comment
• bc3f2f8 CI: Macos-13 on Intel is deprecated
• 77667eb Merge pull request #678 from larskanis/ci-update
• 6e52ce5 CI: Update PostgreSQL on Macos
• 6d40f50 CI: Print mkmf.log on failure on Macos
• Additional commits viewable in compare view

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[dependabot]

Looks like pg is up-to-date now, so this is no longer needed.