Merge pull request #366 from armanbilge/issue/345

Set CI JDK via `tlJdkRelease` setting

Author: armanbilge

core/src/main/scala/org/typelevel/sbt/TypelevelPlugin.scala

@@ -73,6 +73,9 @@ object TypelevelPlugin extends AutoPlugin {
     tlCiScalafmtCheck := true,
     tlCiReleaseBranches := Seq("main"),
     Def.derive(tlFatalWarnings := (tlFatalWarningsInCi.value && githubIsWorkflowBuild.value)),
+    githubWorkflowJavaVersions := {
+      Seq(JavaSpec.temurin(tlJdkRelease.value.getOrElse(8).toString))
+    },
     githubWorkflowBuildMatrixExclusions ++= {
       val defaultScala = (ThisBuild / scalaVersion).value
       for {