Bump pg from 1.1.4 to 1.2.2

Bumps [pg](https://github.com/ged/ruby-pg) from 1.1.4 to 1.2.2.
- [Release notes](https://github.com/ged/ruby-pg/releases)
- [Changelog](https://github.com/ged/ruby-pg/blob/master/History.rdoc)
- [Commits](ged/ruby-pg@v1.1.4...v1.2.2)

Signed-off-by: dependabot-preview[bot] <[email protected]>

Author: dependabot-preview[bot]

Gemfile.lock

@@ -169,7 +169,7 @@ GEM
     parallel (1.19.1)
     parser (2.7.0.2)
       ast (~> 2.4.0)
-    pg (1.1.4)
+    pg (1.2.2)
     public_suffix (4.0.3)
     puma (4.3.1)
       nio4r (~> 2.0)