settings.gradle.kts

Switch build JDK to OpenJDK 11 in Gradle (#7810)
Previously we have the following checks:

- The JDK used in `packageBuild` and `promoteBuild` must be Oracle JDK 9.
- If remote cache is enabled, the build JDK must be Oracle JDK 9 (same as TC).

Now we're going to switch to OpenJDK 11 on TC https://github.com/gradle/gradle/pull/7809 , correspondingly, we change these checks to OpenJDK 11.