ci: update ubuntu image for java 7

Author: darrachequesne

.github/workflows/ci.yml

@@ -13,7 +13,34 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        java: [7, 8, 11]
+        java: [8, 11]
+
+    steps:
+      - uses: actions/checkout@v2
+      - name: Setup java
+        uses: actions/setup-java@v1
+        with:
+          java-version: ${{ matrix.java }}
+      - name: Cache Maven packages
+        uses: actions/cache@v2
+        with:
+          path: ~/.m2
+          key: ${{ runner.os }}-m2-${{ hashFiles('**/pom.xml') }}
+          restore-keys: ${{ runner.os }}-m2
+      - name: Setup Node.js
+        uses: actions/setup-node@v1
+        with:
+          node-version: 14.x
+      - name: Run the Maven verify phase
+        run: mvn verify -Dgpg.skip=true
+
+  verify-java7:
+    runs-on: ubuntu-22.04 # with maven 3.8 (https://github.com/actions/runner-images/blob/ubuntu24/20250105.1/images/ubuntu/Ubuntu2204-Readme.md)
+
+    strategy:
+      fail-fast: false
+      matrix:
+        java: [ 7 ]
 
     steps:
       - uses: actions/checkout@v2