Update maven.yml

Author: javadev

.github/workflows/maven.yml

@@ -36,7 +36,7 @@ jobs:
         GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         SONAR_TOKEN: 19107c464b65c0769768d4564dd1c9b0c2822edd
       run: chmod +x gradlew && ./gradlew spotlessCheck test jacocoTestReport sonarqube -Dsonar.projectKey=javadev_LeetCode-in-Kotlin -Dsonar.host.url=https://sonarcloud.io -Dsonar.organization=javadev-github --no-daemon
-    - uses: codecov/codecov-action@v1
+    - uses: codecov/codecov-action@v2
       with:
         file: ./**/build/reports/jacoco/test/jacocoTestReport.xml
         name: codecov