switch to actions/setup-java@v2

Author: stefanseifert

.github/workflows/maven-build.yml

@@ -22,18 +22,11 @@ jobs:
 
       # Set up environment with Java and Maven
       - name: Setup JDK
-        uses: actions/setup-java@v1
+        uses: actions/setup-java@v2
         with:
-          java-version: 1.8
-
-      # Set up dependency cache
-      - name: Cache local Maven repository
-        uses: actions/cache@v2
-        with:
-          path: ~/.m2/repository
-          key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
-          restore-keys: |
-            ${{ runner.os }}-maven-
+          distribution: temurin
+          java-version: 8
+          cache: 'maven'
 
       # Build & verify
       - name: Build and verify

.github/workflows/maven-deploy.yml

@@ -23,18 +23,11 @@ jobs:
 
       # Set up environment with Java and Maven
       - name: Setup JDK
-        uses: actions/setup-java@v1
+        uses: actions/setup-java@v2
         with:
-          java-version: 1.8
-
-      # Set up dependency cache
-      - name: Cache local Maven repository
-        uses: actions/cache@v2
-        with:
-          path: ~/.m2/repository
-          key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
-          restore-keys: |
-            ${{ runner.os }}-maven-
+          distribution: temurin
+          java-version: 8
+          cache: 'maven'
 
       # Build, deploy to ossrh, deploy site to Github Pages, generate and stage site
       - name: Build, verify, deploy