Upgrade Go version to v1.25

[tenzen-y]

I upgraded Go version to v1.25.

This is blocking the following PRs:

• Bump golang.org/x/time from 0.13.0 to 0.14.0 #734
• Bump golang.org/x/tools from 0.37.0 to 0.38.0 #735
• Bump golang.org/x/crypto from 0.42.0 to 0.43.0 #736
• Bump github/codeql-action from 3 to 4 #737
• Implement clusterDomain propagation to discover file #738

[terrytangyuan]

Thanks!

/lgtm
/approve

[google-oss-prow]

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