Update Go patch versions

What does this MR do and why?

Update Go patch versions

Updates:
* Go 1.20.10 to 1.20.11
* Go 1.21.3 to 1.21.4

Also removes the comments instructing to bump FIPS Go patch versions,
which is not necessary, as the FIPS Go install will default to the
latest available patch.

Changelog: changed

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