Update version of Scala, Scalatest, SBT, JDK and Github Actions

Author: maneatingape

.github/workflows/tests.yml

@@ -10,10 +10,10 @@ jobs:
   build:
     runs-on: ubuntu-latest
     steps:
-    - uses: actions/checkout@v3
-    - uses: actions/setup-java@v3
+    - uses: actions/checkout@v4
+    - uses: actions/setup-java@v4
       with:
-        java-version: '17'
+        java-version: '21'
         distribution: 'corretto'
         cache: 'sbt'
     - run: sbt test

build.sbt

@@ -1,6 +1,6 @@
 name := "Advent of Code"
 
-scalaVersion := "3.3.0"
+scalaVersion := "3.3.3"
 
 scalacOptions ++= Seq(
   "-deprecation",
@@ -10,5 +10,5 @@ scalacOptions ++= Seq(
   "-unchecked")
 
 libraryDependencies ++= Seq(
-  "org.scalatest" %% "scalatest" % "3.2.16" % Test
+  "org.scalatest" %% "scalatest" % "3.2.19" % Test
 )

project/build.properties

@@ -1 +1 @@
-sbt.version=1.9.3
+sbt.version=1.9.9