Update sbt-pgp to 2.2.0

[scala-steward]

Updates com.github.sbt:sbt-pgp from 2.1.2 to 2.2.0. GitHub Release Notes - Version Diff

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 me in the comments below.

Configure Scala Steward for your repository with a .scala-steward.conf file.

Have a fantastic day writing Scala!

Adjust future updates

Add this to your `.scala-steward.conf` file to ignore future updates of this dependency: ``` updates.ignore = [ { groupId = "com.github.sbt", artifactId = "sbt-pgp" } ] ``` Or, add this to slow down future updates of this dependency: ``` dependencyOverrides = [{ pullRequests = { frequency = "@monthly" }, dependency = { groupId = "com.github.sbt", artifactId = "sbt-pgp" } }] ```

labels: sbt-plugin-update, early-semver-minor, semver-spec-minor, commit-count:1

[coveralls]

Coverage remained the same at 96.973% when pulling d072471e7bcfc8eeb0977ca3272e2009bbfb110c on scala-steward:update/sbt-pgp-2.2.0 into 50b4b7f94f2292a02599988a658820f6799cea26 on carueda:main.

[scala-steward]

Superseded by #198.