Trying to run CI build with Java 17-ea

Author: harawata

.github/workflows/ci.yaml

@@ -24,7 +24,7 @@ jobs:
     strategy:
       matrix:
         os: [ubuntu-latest, macOS-latest, windows-latest]
-        java: [8, 11, 15, 16]
+        java: [8, 11, 15, 16, 17-ea]
       fail-fast: false
       max-parallel: 4
     name: Test JDK ${{ matrix.java }}, ${{ matrix.os }}
@@ -42,5 +42,9 @@ jobs:
           key: ${{ runner.os }}-maven-${{ hashFiles('**/pom.xml') }}
           restore-keys: |
             ${{ runner.os }}-maven-
+      - name: Java early access workaround
+        if: ${{ endsWith(matrix.java, '-ea') }}
+        env:
+          JACOCO_SKIP="-Djacoco.skip=true"
       - name: Test with Maven
-        run: ./mvnw test -B -D"license.skip=true"
+        run: ./mvnw test -B -D"license.skip=true" $JACOCO_SKIP