Drop Java 8

.github/scala-steward.conf

@@ -10,3 +10,5 @@ updates.pin = [
   # Prevent updates to 3.2.x and beyond
   { groupId = "org.scalatest", artifactId = "scalatest", version = "3.1."} 
 ]
+
+updatePullRequests = false

.github/workflows/build-test.yml

@@ -38,8 +38,8 @@ jobs:
       - "check-docs"
     uses: playframework/.github/.github/workflows/cmd.yml@v3
     with:
-      java: 11, 8
-      scala: 2.12.x, 2.13.x
+      java: 17, 11
+      scala: 2.13.x
       cmd: sbt ++$MATRIX_SCALA test
 
   finish:

.github/workflows/publish.yml

@@ -9,5 +9,5 @@ on:
 jobs:
   publish-artifacts:
     name: Publish / Artifacts
-    uses: playframework/.github/.github/workflows/publish.yml@v2
+    uses: playframework/.github/.github/workflows/publish.yml@v3
     secrets: inherit

build.sbt

@@ -116,6 +116,7 @@ val playGenerators = Project(id = "play-grpc-generators", file("play-generators"
     buildInfoPackage                  := "play.grpc.gen",
     // Only used in build tools (like sbt), so only 2.12 is needed:
     crossScalaVersions := Seq(scala212),
+    scalaVersion       := scala212,
   )
 
 val playTestkit = Project("play-grpc-testkit", file("play-testkit"))

project/CommonPlugin.scala

@@ -18,7 +18,8 @@ object CommonPlugin extends AutoPlugin {
         Nil
     },
     doc / javacOptions --= Seq("-Xlint:unchecked", "-Xlint:deprecation"),
-    crossScalaVersions := Seq(scala212, scala213),
+    crossScalaVersions := Seq(scala213),
+    scalaVersion       := scala213,
   )
 
   val scalaVersionNumber = Def.setting(VersionNumber(scalaVersion.value))

project/Dependencies.scala

@@ -20,10 +20,10 @@ object Dependencies {
     val akkaGrpc = AkkaGrpcBuildInfo.version
     val grpc     = AkkaGrpcBuildInfo.grpcVersion
 
-    val play = "2.8.21"
+    val play = "2.9.1"
 
-    val scalaTest         = "3.1.4"
-    val scalaTestPlusPlay = "5.1.0"
+    val scalaTest         = "3.2.14"
+    val scalaTestPlusPlay = "6.0.0"
 
     val macwire = "2.5.9"
   }
@@ -74,7 +74,7 @@ object Dependencies {
     val scalaTestPlusPlay = Compile.scalaTestPlusPlay % Test
 
     val junitInterface = "com.github.sbt" % "junit-interface" % "0.13.3" % "test"
-    val logback        = "ch.qos.logback" % "logback-classic" % "1.2.12" % "test"
+    val logback        = "ch.qos.logback" % "logback-classic" % "1.4.4"  % "test"
   }
 
 }

project/build.properties

@@ -1 +1 @@
-sbt.version=1.7.2
+sbt.version=1.9.8

project/plugins.sbt

@@ -1,6 +1,6 @@
 addSbtPlugin("com.eed3si9n"            % "sbt-buildinfo"      % "0.11.0")
 addSbtPlugin("com.lightbend.akka"      % "sbt-paradox-akka"   % "0.44")
-addSbtPlugin("com.typesafe.sbt"        % "sbt-twirl"          % "1.5.1")
+addSbtPlugin("com.typesafe.play"       % "sbt-twirl"          % "1.6.4")
 addSbtPlugin("de.heikoseeberger"       % "sbt-header"         % "5.10.0")
 addSbtPlugin("org.scalameta"           % "sbt-scalafmt"       % "2.5.1")
 addSbtPlugin("com.lightbend.sbt"       % "sbt-java-formatter" % "0.8.0")

project/project-info.conf

@@ -1,7 +1,7 @@
 project-info {
   # version is overridden from the `projectInfoVersion` key (which defaults to sbt's project version)
   version: "current"
-  jdk-versions: ["OpenJDK 8"]
+  jdk-versions: ["Eclipse Temurin OpenJDK 11"]
   title: "play-grpc"
   issues: {
     url: "https://github.com/playframework/play-grpc/issues"