Adopt GHA Scala Library Release Workflow

Here we're switching from using `actions-sbt-release` to
`gha-scala-library-release-workflow` for publishing releases of this
library - see also guardian/actions-sbt-release#1.

A fair bit of sbt configuration is deleted or changed - see the docs on
config changes for more information:

https://github.com/guardian/gha-scala-library-release-workflow/blob/main/docs/configuration.md

Once this PR is merged, we should also delete the old repository secrets:

https://github.com/guardian/atom-maker/settings/secrets/actions

.github/workflows/release.yml

@@ -1,15 +1,12 @@
-name: 'Publish Release'
+name: Release
+
 on:
-  release:
-    types: [published]
+  workflow_dispatch:
+
 jobs:
-  sbt_release:
-    runs-on: ubuntu-latest
-    steps:
-      - uses: guardian/actions-sbt-release@v3
-        with:
-            pgpSecret: ${{ secrets.PGP_SECRET }}
-            pgpPassphrase: ${{ secrets.PGP_PASSPHRASE }}
-            sonatypeUsername: ${{ secrets.SONATYPE_USERNAME }}
-            sonatypePassword: ${{ secrets.SONATYPE_PASSWORD }}
-            isSnapshot: ${{ github.event.release.prerelease }}
+  release:
+    uses: guardian/gha-scala-library-release-workflow/.github/workflows/reusable-release.yml@main
+    permissions: { contents: write, pull-requests: write }
+    secrets:
+      SONATYPE_PASSWORD: ${{ secrets.AUTOMATED_MAVEN_RELEASE_SONATYPE_PASSWORD }}
+      PGP_PRIVATE_KEY: ${{ secrets.AUTOMATED_MAVEN_RELEASE_PGP_SECRET }}

build.sbt

@@ -1,65 +1,47 @@
 import sbtrelease._
-import ReleaseStateTransformations._
-
+import ReleaseStateTransformations.*
+import sbtversionpolicy.withsbtrelease.ReleaseVersion
 
 name := "atom-maker-lib"
 
-lazy val baseSettings = Seq(
+lazy val artifactProductionSettings = Seq(
   organization := "com.gu",
-  scalaVersion := "2.12.17",
-  crossScalaVersions := Seq(scalaVersion.value, "2.13.10"),
-  licenses := Seq("Apache V2" -> url("https://www.apache.org/licenses/LICENSE-2.0.html")),
-  scmInfo := Some(ScmInfo(url("https://github.com/guardian/atom-maker"),
-    "scm:git:[email protected]:guardian/atom-maker.git")),
-  scalacOptions := Seq("-deprecation", "-feature"),
-  publishTo := sonatypePublishToBundle.value,
+  scalaVersion := "2.12.18",
+  crossScalaVersions := Seq(scalaVersion.value, "2.13.12"),
+  licenses := Seq(License.Apache2),
+  scalacOptions := Seq("-deprecation", "-feature", "-release:8")
 )
 
 lazy val atomPublisher = (project in file("./atom-publisher-lib"))
-  .settings(baseSettings: _*)
   .settings(
-    organization := "com.gu",
-    name := "atom-publisher-lib"
+    name := "atom-publisher-lib",
+    Test / publishArtifact := true,
+    artifactProductionSettings
   )
-  .settings(Test / publishArtifact := true)
 
 
 lazy val atomManagerPlay = (project in file("./atom-manager-play-lib"))
-  .settings(baseSettings: _*)
+  .dependsOn(atomPublisher % "test->test;compile->compile")
   .settings(
-    organization := "com.gu",
-    name := "atom-manager-play-lib"
+    name := "atom-manager-play-lib",
+    Test / publishArtifact := true,
+    artifactProductionSettings
   )
-  .settings(Test / publishArtifact := true)
-  .dependsOn(atomPublisher % "test->test;compile->compile")
-
-lazy val commonReleaseProcess = Seq[ReleaseStep](
-  checkSnapshotDependencies,
-  inquireVersions,
-  setReleaseVersion,
-  runClean,
-  runTest,
-  // For non cross-build projects, use releaseStepCommand("publishSigned")
-  releaseStepCommandAndRemaining("+publishSigned"),
-)
-
-lazy val productionReleaseProcess = commonReleaseProcess ++ Seq[ReleaseStep](
-  releaseStepCommand("sonatypeBundleRelease"),
-)
-
-lazy val snapshotReleaseProcess = commonReleaseProcess
 
 lazy val atomLibraries = (project in file("."))
-  .aggregate(atomPublisher, atomManagerPlay)
-  .settings(baseSettings: _*).settings(
-  publishArtifact := false,
-  publish := {},
-  publishLocal := {},
-  releaseCrossBuild := true, // true if you cross-build the project for multiple Scala versions
-  releaseProcess := {
-    sys.props.get("RELEASE_TYPE") match {
-      case Some("production") => productionReleaseProcess
-      case _ => snapshotReleaseProcess
-    }
-  }
-)
+  .aggregate(atomPublisher, atomManagerPlay).settings(
+    publish / skip := true,
+    releaseVersion := ReleaseVersion.fromAggregatedAssessedCompatibilityWithLatestRelease().value,
+    releaseCrossBuild := true, // true if you cross-build the project for multiple Scala versions
+    releaseProcess := Seq[ReleaseStep](
+      checkSnapshotDependencies,
+      inquireVersions,
+      runClean,
+      runTest,
+      setReleaseVersion,
+      commitReleaseVersion,
+      tagRelease,
+      setNextVersion,
+      commitNextVersion
+    )
+  )

project/build.properties

@@ -1 +1 @@
-sbt.version=1.8.0
+sbt.version=1.9.8

project/plugins.sbt

@@ -1,14 +1,8 @@
-// The Typesafe repository
-resolvers += "Typesafe repository" at "https://repo.typesafe.com/typesafe/maven-releases/"
-
-// Use the Play sbt plugin for Play projects
 addSbtPlugin("com.typesafe.play" % "sbt-plugin" % "2.8.8")
 
 addSbtPlugin("com.github.sbt" % "sbt-release" % "1.1.0")
-
-addSbtPlugin("com.github.sbt" % "sbt-pgp" % "2.2.1")
-
-addSbtPlugin("org.xerial.sbt" % "sbt-sonatype" % "3.9.15")
+addSbtPlugin("org.xerial.sbt" % "sbt-sonatype" % "3.10.0")
+addSbtPlugin("ch.epfl.scala" % "sbt-version-policy" % "3.2.0")
 
 // for creating test cases that use a local dynamodb
 addSbtPlugin("com.localytics" % "sbt-dynamodb" % "2.0.3")

version.sbt

@@ -0,0 +1 @@
+ThisBuild / version := "1.4.1-SNAPSHOT"