Update postgresql to 42.2.6

[scala-steward]

Updates org.postgresql:postgresql from 42.1.4 to 42.2.6.

I'll automatically update this PR to resolve conflicts as long as you don't change it yourself.

If you'd like to skip this version, you can just close this PR. If you have any feedback, just mention @scala-steward in the comments below.

Have a fantastic day writing Scala!

Ignore future updates

Add this to your .scala-steward.conf file to ignore future updates of this dependency:

updates.ignore = [ { groupId = "org.postgresql", artifactId = "postgresql" } ]

labels: semver-minor

[codecov]

Codecov Report

Merging #673 into master will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master     #673   +/-   ##
=======================================
  Coverage   83.24%   83.24%           
=======================================
  Files         230      230           
  Lines        8754     8754           
  Branches      636      636           
=======================================
  Hits         7287     7287           
  Misses       1467     1467

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