Bump Scala to 2.13.15

.github/scripts/build-linux-aarch64-from-docker.sh

@@ -6,7 +6,7 @@ apt-get install -q -y build-essential libz-dev zlib1g-dev git python3-pip curl z
 
 export PATH="$(pwd)/utils:$PATH"
 
-eval "$(cs java --env --jvm 11 --jvm-index https://github.com/coursier/jvm-index/raw/master/index.json)"
+eval "$(cs java --env --jvm temurin:17 --jvm-index https://github.com/coursier/jvm-index/raw/master/index.json)"
 
 git config --global --add safe.directory "$(pwd)"
 

.github/scripts/test-linux-aarch64-from-docker.sh

@@ -6,7 +6,7 @@ apt-get install -q -y build-essential libz-dev zlib1g-dev git python3-pip curl
 
 export PATH="$(pwd)/utils:$PATH"
 
-eval "$(cs java --env --jvm 11 --jvm-index https://github.com/coursier/jvm-index/raw/master/index.json)"
+eval "$(cs java --env --jvm temurin:17 --jvm-index https://github.com/coursier/jvm-index/raw/master/index.json)"
 
 git config --global --add safe.directory "$(pwd)"
 

.scalafmt.conf

@@ -1,5 +1,5 @@
 version = "3.8.3"
-runner.dialect = scala212
+runner.dialect = scala213
 
 align.preset = more
 maxColumn = 100

build.sc

@@ -10,14 +10,14 @@ import mill.scalalib._
 
 import scala.util.Properties
 
-def scalaDefaultVersion = "2.12.20"
+def scalaDefaultVersion = "2.13.15"
 def coursierVersion     = "2.1.15"
 def graalVmVersion      = "22.1.0"
 def utestVersion        = "0.8.4"
 
 object `cs-m1` extends JavaModule with NativeImage {
   def ivyDeps = super.ivyDeps() ++ Seq(
-    ivy"io.get-coursier:coursier-cli_2.12:$coursierVersion"
+    ivy"io.get-coursier:coursier-cli_2.13:$coursierVersion"
   )
 
   def nativeImageGraalVmJvmId = T {
@@ -53,7 +53,7 @@ object `cs-m1` extends JavaModule with NativeImage {
 object `cs-m1-tests` extends ScalaModule {
   def scalaVersion = scalaDefaultVersion
   def ivyDeps = super.ivyDeps() ++ Seq(
-    ivy"io.get-coursier:cli-tests_2.12:$coursierVersion"
+    ivy"io.get-coursier:cli-tests_2.13:$coursierVersion"
   )
   object test extends Tests {
     def ivyDeps = super.ivyDeps() ++ Seq(