Add missing sbt in CI

Author: dwickern

.github/workflows/build.yml

@@ -13,20 +13,16 @@ jobs:
 
  steps:
  - name: Checkout
- uses: actions/checkout@v2
+ uses: actions/checkout@v4
 
  - name: Set up JDK 1.8
- uses: actions/setup-java@v1
+ uses: actions/setup-java@v4
  with:
- java-version: 1.8
+ distribution: temurin
+ java-version: 8
+ cache: sbt
 
- - name: Cache SBT
- uses: actions/cache@v2
- with:
- path: |
- ~/.ivy2/cache
- ~/.sbt
- key: ${{ runner.os }}-sbt-${{ hashFiles('**/build.sbt', '**/plugins.sbt') }}
+ - uses: sbt/setup-sbt@v1
 
  - name: Run tests
  run: sbt test mdoc