Update sbt-plugin to 2.9.7

Author: jona7o

project/plugins.sbt

@@ -1,3 +1,3 @@
-addSbtPlugin("com.typesafe.play" % "sbt-plugin" % "2.8.18")
+addSbtPlugin("com.typesafe.play" % "sbt-plugin" % "2.9.7")
 addSbtPlugin("com.codecommit" % "sbt-github-packages" % "0.5.3")
 addSbtPlugin("com.disneystreaming.smithy4s" % "smithy4s-sbt-codegen" % "0.16.6")