Fix missing sbt in newer GitHub actions

Author: schoeberl

.github/workflows/scala.yml

@@ -1,10 +1,15 @@
+# This workflow uses actions that are not certified by GitHub.
+# They are provided by a third-party and are governed by
+# separate terms of service, privacy policy, and support
+# documentation.
+
 name: Scala CI
 
 on:
   push:
-    branches: [ master ]
+    branches: [ "master" ]
   pull_request:
-    branches: [ master ]
+    branches: [ "master" ]
 
 permissions:
   contents: read
@@ -15,13 +20,14 @@ jobs:
     runs-on: ubuntu-latest
 
     steps:
-    - uses: actions/checkout@v3
+
+    - uses: actions/checkout@v4
     - name: Set up JDK 11
-      uses: actions/setup-java@v3
+      uses: actions/setup-java@v4
       with:
         java-version: '11'
         distribution: 'temurin'
+    - name: Setup sbt
+      uses: sbt/setup-sbt@v1
     - name: Run tests
       run: sbt test
-    - name: Generate verilog
-      run: sbt run