Add remote JDK 25 for riscv64, ppc64le and s390x

[kxxt]

A remote JDK 25 is necessary for building Bazel 9.

This PR adds remote JDK 25 for riscv64, ppc64le and s390x architectures to fix build failure of bazel 9.0 on these architectures: https://archriscv.felixc.at/.status/log.htm?url=logs/bazel/bazel-9.0.0-1.log

[kxxt]

The CI failure seems unrelated to this PR. The CI pipeline failed to download buildifier:

##### :bazel: buildifier: error while downloading Buildifier:
<pre><code>There is no Buildifier binary for release v8.5.1</code></pre>

[kxxt]

Some tests are failing because the newly added JDKs are not mirrored.

URLs that aren't mirrored:
  https://github.com/adoptium/temurin25-binaries/releases/download/jdk-25.0.2+10/OpenJDK25U-jdk_ppc64le_linux_hotspot_25.0.2_10.tar.gz
  https://github.com/adoptium/temurin25-binaries/releases/download/jdk-25.0.2+10/OpenJDK25U-jdk_riscv64_linux_hotspot_25.0.2_10.tar.gz
  https://github.com/adoptium/temurin25-binaries/releases/download/jdk-25.0.2+10/OpenJDK25U-jdk_s390x_linux_hotspot_25.0.2_10.tar.gz

[hvadehra]

Please file a request for the mirrors using https://github.com/bazelbuild/bazel/issues/new?template=mirror_request.yml

(example: bazelbuild/bazel#27416)

[kxxt]

I have rebased this PR to fix CI and the tests pass now.