Update scala.yml

Author: wjglerum

.github/workflows/scala.yml

@@ -13,10 +13,11 @@ jobs:
 
     steps:
     - uses: actions/checkout@v4
-    - name: Set up JDK 11
+    - name: Set up JDK
       uses: actions/setup-java@v4
       with:
-        java-version: '11'
-        distribution: 'adopt'
+        java-version: '21'
+        distribution: 'temurin'
+    - uses: sbt/setup-sbt@v1
     - name: Run tests
       run: sbt test