Bump Scala 2.12 in various tests

Author: lefou

example/scalalib/module/14-cross-scala-version/build.mill

@@ -1,7 +1,7 @@
 package build
 import mill.*, scalalib.*
 
-val scalaVersions = Seq("2.12.20", "2.13.16")
+val scalaVersions = Seq("2.12.21", "2.13.16")
 
 object foo extends Cross[FooModule](scalaVersions)
 trait FooModule extends CrossScalaModule {
@@ -27,11 +27,11 @@ trait BarModule extends CrossScalaModule
 > ./mill resolve __.run
 foo.2_12_20.run
 foo.2_13_16.run
-bar.2_12_20.run
+bar.2_12_21.run
 bar.2_13_16.run
 
-> ./mill foo.2_12_20.run
-Foo.value: Hello World Scala library version 2.12.20...
+> ./mill foo.2_12_21.run
+Foo.value: Hello World Scala library version 2.12.21...
 Bar.value: bar-value
 Specific code for Scala 2.x
 Specific code for Scala 2.12.x

example/scalalib/spark/1-hello-spark/build.mill

@@ -7,7 +7,7 @@ object foo extends ScalaModule {
   // refuses to start with `-Djava.security.manager=allow`. Pin this example
   // to JDK 21 until Spark/Hadoop catch up.
   def jvmId = "zulu:21"
-  def scalaVersion = "2.12.20"
+  def scalaVersion = "2.12.21"
   def mvnDeps = Seq(
     mvn"org.apache.spark::spark-core:3.5.4",
     mvn"org.apache.spark::spark-sql:3.5.4"

example/scalalib/spark/3-semi-realistic/build.mill

@@ -7,7 +7,7 @@ object `package` extends ScalaModule { outer =>
   // refuses to start with `-Djava.security.manager=allow`. Pin this example
   // to JDK 21 until Spark/Hadoop catch up.
   def jvmId = "zulu:21"
-  def scalaVersion = "2.12.20"
+  def scalaVersion = "2.12.21"
   def mvnDeps = Seq(
     mvn"org.apache.spark::spark-core:3.5.6",
     mvn"org.apache.spark::spark-sql:3.5.6"

example/thirdparty/fansi/build.mill

@@ -5,7 +5,7 @@ import mill.javalib.api.JvmWorkerUtil.isScala3
 
 val dottyCommunityBuildVersion = sys.props.get("dottyVersion")
 
-val scalaVersions = Seq("2.12.20", "2.13.16", "3.3.6") ++ dottyCommunityBuildVersion
+val scalaVersions = Seq("2.12.21", "2.13.16", "3.3.6") ++ dottyCommunityBuildVersion
 
 trait FansiModule extends PublishModule with CrossScalaModule with PlatformScalaModule {
   def artifactName = "fansi"
@@ -60,26 +60,26 @@ object fansi extends Module {
 /** Usage
 
 > ./mill resolve __.compile
-fansi.js.2_12_20.compile
-fansi.js.2_12_20.test.compile
+fansi.js.2_12_21.compile
+fansi.js.2_12_21.test.compile
 fansi.js.2_13_16.compile
 fansi.js.2_13_16.test.compile
 fansi.js.3_3_6.compile
 fansi.js.3_3_6.test.compile
-fansi.jvm.2_12_20.compile
-fansi.jvm.2_12_20.test.compile
+fansi.jvm.2_12_21.compile
+fansi.jvm.2_12_21.test.compile
 fansi.jvm.2_13_16.compile
 fansi.jvm.2_13_16.test.compile
 fansi.jvm.3_3_6.compile
 fansi.jvm.3_3_6.test.compile
-fansi.native.2_12_20.compile
-fansi.native.2_12_20.test.compile
+fansi.native.2_12_21.compile
+fansi.native.2_12_21.test.compile
 fansi.native.2_13_16.compile
 fansi.native.2_13_16.test.compile
 fansi.native.3_3_6.compile
 fansi.native.3_3_6.test.compile
 
-> ./mill fansi.jvm.2_12_20.compile
+> ./mill fansi.jvm.2_12_21.compile
 compiling 1 Scala source...
 ...