Please update go version to 1.21.9 or 1.22.2

[akoshok1]

This is for CVE : GHSA-4v7x-pqxf-cx7m
This is for decK 1.37.

[Prashansa-K]

@akoshok1 @mheap
The latest deck version (1.39) already uses 1.22.4.
If we do a patch release for 1.37 with this update, would we need to do the same for 1.38?

Also, prior versions (1.36 and lower) have 1.21 as well. Do we still support these or are these deprecated / EOL? How many simultaneous versions do we support at a time?

[mheap]

@Prashansa-K It looks like the release job uses 1.20 (see https://github.com/Kong/deck/blob/main/.github/workflows/release.yaml#L20)

We should update the jobs to read from go.mod and release a new version. Asking people to upgrade to latest is acceptable for deck

[Prashansa-K]

This is fixed in 1.39.3