Bump pg from 1.2.2 to 1.2.3

[dependabot-preview[bot]]

Bumps pg from 1.2.2 to 1.2.3.

Changelog

Sourced from pg's changelog.

== v1.2.3 [2020-03-18] Michael Granger ged@FaerieMUD.org

Bugfixes:

• Fix possible segfault at PG::Coder#encode, decode or their implicit calls through a typemap after GC.compact. #327
• Fix possible segfault in PG::TypeMapByClass after GC.compact. #328

Commits

• 4101db6 Bump the patch version, update history
• e95de2f Run x86-mingw32 cross build only, to decrease test time
• 822bd91 Merge pull request #330 from amarshall/avoid-typemap-warn
• 6ac3de4 Avoid type cast warning in build_coder_maps
• a50f238 Update History for 1.2.3
• 7c1756f Fix possible segfaults after GC.compact
• 093741a Merge pull request #326 from semaperepelitsa/patch-1
• 2712bfb Fix small typo in Readme
• 60e50ce conn.socket works on Unix only
• 3f2612d conn.socket_io is compiled unconditionally now
• Additional commits viewable in compare view

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[coveralls]

Coverage remained the same at 97.931% when pulling 1c880f6abae49327e04e62a13b94b0596d615693 on dependabot/bundler/pg-1.2.3 into f7fee9544b87b5dd190245c4df7d77b45282304a on master.

[bensheldon]

@dependabot recreate