Increase surefire timeout to 20m

Some modules such as vertx-http-deployment now have a lot of tests, and
are starting to hit the timeout if they are on a slow host.

.github/workflows/ci-actions-incremental.yml

@@ -295,7 +295,7 @@ jobs:
       - name: Build
         shell: bash
         # Despite the pre-calculated run_jvm flag, GIB has to be re-run here to figure out the exact submodules to build.
-        run: ./mvnw $COMMON_MAVEN_ARGS install -Dsurefire.timeout=600 -pl !integration-tests/gradle -pl !integration-tests/maven -pl !integration-tests/devtools ${{ matrix.java.maven_args }} ${{ needs.build-jdk11.outputs.gib_args }}
+        run: ./mvnw $COMMON_MAVEN_ARGS install -Dsurefire.timeout=1200 -pl !integration-tests/gradle -pl !integration-tests/maven -pl !integration-tests/devtools ${{ matrix.java.maven_args }} ${{ needs.build-jdk11.outputs.gib_args }}
       - name: Prepare failure archive (if maven failed)
         if: failure()
         shell: bash