bump go 1.24.9

[BenTheElder]

This gets us onto a currently supported go reelase at the latest patch version, 1.25 will require other fixes ... I'm looking but it's not going to be trivial, let's go ahead and at least get on something stable.

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pull-test-infra-verify-lint	413632c	link	true	/test pull-test-infra-verify-lint

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[BenTheElder]

This won't work without more involved changes, so we might as well sort out 1.25