Update compilerplugin, scalapb-runtime, ... to 0.11.20

Author: scala-steward

project/plugins.sbt

@@ -1,7 +1,7 @@
 // ScalaPB
 addSbtPlugin("com.thesamet" % "sbt-protoc" % "1.0.6")
 addSbtPlugin("com.thesamet" % "sbt-protoc-gen-project" % "0.1.8")
-libraryDependencies += "com.thesamet.scalapb" %% "compilerplugin" % "0.11.11"
+libraryDependencies += "com.thesamet.scalapb" %% "compilerplugin" % "0.11.20"
 
 
 // Scalafmt