bump sbt and plugin versions

build.sbt

@@ -5,7 +5,7 @@ name := "targeting-client"
 
 organization := "com.gu"
 
-scalaVersion := "2.13.1"
+scalaVersion := "2.13.8"
 
 scalacOptions ++= Seq("-feature", "-deprecation")
 
@@ -17,15 +17,13 @@ libraryDependencies ++= Seq(
   playJson
 )
 
-releaseCrossBuild := true
+crossScalaVersions := Seq(scalaVersion.value, "2.12.15")
 
-crossScalaVersions := Seq(scalaVersion.value, "2.12.11")
-
-publishArtifact in Test := false
+Test / publishArtifact := false
 
 publishMavenStyle := true
 
-publishTo := sonatypePublishTo.value
+publishTo := sonatypePublishToBundle.value
 
 licenses := Seq("Apache V2" -> url("http://www.apache.org/licenses/LICENSE-2.0.html"))
 
@@ -43,8 +41,7 @@ developers := List(Developer(
   url = url("https://github.com/guardian")
 ))
 
-releasePublishArtifactsAction := PgpKeys.publishSigned.value
-
+releaseCrossBuild := true // true if you cross-build the project for multiple Scala versions
 releaseProcess := Seq[ReleaseStep](
   checkSnapshotDependencies,
   inquireVersions,
@@ -53,9 +50,10 @@ releaseProcess := Seq[ReleaseStep](
   setReleaseVersion,
   commitReleaseVersion,
   tagRelease,
-  publishArtifacts,
+  // For non cross-build projects, use releaseStepCommand("publishSigned")
+  releaseStepCommandAndRemaining("+publishSigned"),
+  releaseStepCommand("sonatypeBundleRelease"),
   setNextVersion,
   commitNextVersion,
-  releaseStepCommand("sonatypeReleaseAll"),
   pushChanges
 )

project/build.properties

@@ -1 +1 @@
-sbt.version=1.3.9
+sbt.version=1.6.2

project/plugins.sbt

@@ -1,5 +1,5 @@
-addSbtPlugin("com.jsuereth" % "sbt-pgp" % "2.0.0")
+addSbtPlugin("com.github.sbt" % "sbt-pgp" % "2.1.2")
 
-addSbtPlugin("org.xerial.sbt" % "sbt-sonatype" % "3.9.2")
+addSbtPlugin("org.xerial.sbt" % "sbt-sonatype" % "3.9.12")
 
-addSbtPlugin("com.github.gseitz" % "sbt-release" % "1.0.13")
+addSbtPlugin("com.github.sbt" % "sbt-release" % "1.1.0")

version.sbt

@@ -1 +1 @@
-version in ThisBuild := "1.1.1-SNAPSHOT"
+ThisBuild / version := "1.1.1-SNAPSHOT"