From #18079 (comment)

We can upgrade jdk21 to jdk25 job. We don't need jdk21 any more if we can have jdk25.
There might be some other jdk25 syntax features there that we don't support, we can just add them to filters, to not block us now.

Change is same as the following but for OpenJDK 25:

• Issue #13982: Run regression testing in CI over openjdk21 #13989