Try to get Codecov working.

.github/workflows/coverage.yml

@@ -29,24 +29,19 @@ jobs:
         java: [ 8 ]
 
     steps:
-    - uses: actions/checkout@9bb56186c3b09b4f86b1c65136769dd318469633 # 4.1.2
+    - uses: actions/checkout@9bb56186c3b09b4f86b1c65136769dd318469633 # v4.1.2
       with:
         persist-credentials: false
-    - uses: actions/cache@ab5e6d0c87105b4c9c2047343972218f562e4319 # v4.0.1
-      with:
-        path: ~/.m2/repository
-        key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
-        restore-keys: |
-          ${{ runner.os }}-maven-
     - name: Set up JDK ${{ matrix.java }}
       uses: actions/setup-java@99b8673ff64fbf99d8d325f52d9a5bdedb8483e9 # v4.2.1
       with:
         distribution: 'temurin'
         java-version: ${{ matrix.java }}
+        cache: 'maven'
     - name: Build with Maven
       run: mvn --show-version --batch-mode --no-transfer-progress test jacoco:report
 
     - name: Upload coverage to Codecov
-      uses: codecov/codecov-action@54bcd8715eee62d40e33596ef5e8f0f48dbbccab # v4.1.0
+      uses: codecov/codecov-action@54bcd8715eee62d40e33596ef5e8f0f48dbbccab # v3
       with:
         files: ./target/site/jacoco/jacoco.xml