chore(deps): update dependency com.github.sbt:sbt-pgp to v2.3.1

Author: renovate[bot]

project/plugins.sbt

@@ -12,4 +12,4 @@ addSbtPlugin("com.github.gseitz" % "sbt-release" % "1.0.13")
 
 // Publishing
 addSbtPlugin("org.xerial.sbt" % "sbt-sonatype" % "3.12.2")
-addSbtPlugin("com.github.sbt" % "sbt-pgp" % "2.3.0")
+addSbtPlugin("com.github.sbt" % "sbt-pgp" % "2.3.1")