Bump pg from 1.5.6 to 1.5.7

[dependabot[bot]]

Bumps pg from 1.5.6 to 1.5.7.

Changelog

Sourced from pg's changelog.

v1.5.7 [2024-07-28] Lars Kanis lars@greiz-reinsdorf.de

• Remove deprecated use of fptr->fd.#562 Direct access is disallowed since ruby-3.4.
• Make pgconn_connect_poll close the socket prior to calling PQconnectPoll. #564 This could result in an exception while connecting when used multi threaded.
• Fix several typos and improve spelling in documentation and code. #566
• Add missing PG::RollbackTransaction as an option to exit conn.transaction. #560 Usage like in rails: https://api.rubyonrails.org/classes/ActiveRecord/Rollback.html
• Don't print a warning when bigdecimal is required on ruby-3.4+ #574

Commits

• 0ac827c Bump VERSION to 1.5.7
• cdb5202 Update release notes for pg-1.5.7
• 5935b15 Merge pull request #575 from larskanis/appv1
• e5f1630 CI: Fix appveyor build by switching to x64 platform
• 8e62c81 Fix ruby warning
• d17123c Merge pull request #574 from larskanis/bigdeci
• a629d14 Don't print a warning when bigdecimal is required on ruby-3.4+
• 1a94b12 Add comment to Gemfile reg. bigdecimal
• 3719759 Add ostruct as a development gem as a preparation for ruby-3.5
• 69551bd Add release notes for pg-1.5.7
• Additional commits viewable in compare view

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