🌱 Bump go to v1.23.7

[mboersma]

What this PR does / why we need it:

Updates the Go toolchain to the latest patch release.

go1.23.7 (released 2025-03-04) includes security fixes to the net/http package, as well as bug fixes to cgo, the compiler, and the reflect, runtime, and syscall packages. See the Go 1.23.7 milestone on our issue tracker for details.

Also updates the reference PR for bumping the Go version, since #7981 actually misses a couple of references.

Which issue(s) this PR fixes:

N/A

/area dependency

[sbueringer]

Doesn't really matter either way but I think we don't really have to keep netlify on the exact same patch version. It's just building our book

[mboersma]

Probably doesn't matter, but I think it's safer to be in the habit of bumping it along with everything else. Otherwise, we'll forget and it will lag behind (which again, probably doesn't matter much...until it does).

[sbueringer]

/lgtm
/approve

[k8s-ci-robot]

LGTM label has been added.

Git tree hash: 8e40725d6a4918d2ee0b281a9d901e9bab0837f7

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: sbueringer

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