HDDS-15669. Create ozone-runner with JDK25

[adoroszlai]

What changes were proposed in this pull request?

Install JDK 25 in ozone-runner so that we can test Ozone with it. Update docs to mention jdk25.

If merged, will create branch for jdk21 variant starting at the previous commit on master.

https://issues.apache.org/jira/browse/HDDS-15669

How was this patch tested?

CI:
https://github.com/adoroszlai/ozone-docker-runner/actions/runs/28167782102

$ docker run -it --rm ghcr.io/adoroszlai/ozone-runner:034d125b27740d3d300ff14811631623d1f514ac java -version
To use Ozone please mount ozone folder to /opt/hadoop
openjdk version "25.0.2" 2026-01-20
OpenJDK Runtime Environment (build 25.0.2+10-69)
OpenJDK 64-Bit Server VM (build 25.0.2+10-69, mixed mode, sharing)

[adoroszlai]

Thanks @amaliujia for the review.