Update dependency com.eed3si9n:sbt-assembly to v2

Author: renovate[bot]

project/plugins.sbt

@@ -9,7 +9,7 @@ addSbtPlugin("com.thesamet" % "sbt-protoc" % "1.0.6")
 addSbtPlugin("com.sourcegraph" % "sbt-sourcegraph" % "0.4.0")
 addSbtPlugin("com.lightbend.sbt" % "sbt-java-formatter" % "0.6.1")
 addSbtPlugin("pl.project13.scala" % "sbt-jmh" % "0.4.3")
-addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "0.15.0")
+addSbtPlugin("com.eed3si9n" % "sbt-assembly" % "2.1.0")
 addSbtPlugin("io.spray" % "sbt-revolver" % "0.9.1")
 
 // sbt-jdi-tools appears to fix an error related to this message: