build: 移除 Travis，替换为 GitHub Actions

Author: stick-i

.github/workflows/mvn-test.yml

@@ -12,9 +12,10 @@ jobs:
         with:
           distribution: 'zulu'
           java-version: '8'
+          cache: maven
 
       - run: |
           java -version
           mvn -v
 
-      - run: mvn clean test jacoco:report coveralls:report -DrepoToken="${{secrets.COVERALLS_TOKEN}}"
+      - run: mvn --batch-mode --update-snapshots clean test jacoco:report coveralls:report -DrepoToken="${{secrets.COVERALLS_TOKEN}}"