Fix codecov upload for codecov-action v5

Signed-off-by: Daniel Widdis <[email protected]>

.github/workflows/CI.yml

@@ -7,8 +7,6 @@ on:
   pull_request:
     branches:
       - "*"
-env:
-  ACTIONS_ALLOW_USE_UNSECURE_NODE_VERSION: true
 
 jobs:
   Get-CI-Image-Tag:
@@ -71,13 +69,33 @@ jobs:
         su `id -un 1000` -c 'whoami && java -version &&
                              echo "build and run tests" && ./gradlew build &&
                              echo "Publish to Maven Local" && ./gradlew publishToMavenLocal'
+    - name: Upload Coverage Report Artifact
+      uses: actions/upload-artifact@v4
+      with:
+        name: coverage-report-linux
+        path: ./coverage.xml
     - name: Upload Coverage Report
       if: contains(matrix.java, '21')
       uses: codecov/codecov-action@v5
       env:
         CODECOV_TOKEN: ${{ secrets.CODECOV_TOKEN }}
       with:
-        file: ./build/reports/jacoco/test/jacocoTestReport.xml
+        files: ./build/reports/jacoco/test/jacocoTestReport.xml
+
+  linux-codecov-upload:
+    needs: build-linux
+    runs-on: ubuntu-24.04
+    steps:
+      - name: Download Coverage Report Artifact
+        uses: actions/download-artifact@v4
+        with:
+          name: coverage-report-linux
+          path: ./
+      - name: Upload Coverage Report
+        uses: codecov/codecov-action@v5
+        with:
+          token: ${{ secrets.CODECOV_TOKEN }}
+          files: ./coverage.xml
 
   build-windows:
     needs: [spotless, javadoc]