Bump to `go` `1.21` #275

Job	Run time
suites	2s
smoke (actions)	55s
smoke (bundler-group-rules)	55s
smoke (bundler-group-vendoring)	1m 24s
smoke (bundler)	51s
smoke (cargo)	1m 19s
smoke (composer)	52s
smoke (docker)	38s
smoke (elm)	44s
smoke (go-close-pr)	57s
smoke (go-group-rules)	1m 14s
smoke (go-security)	1m 18s
smoke (go-update-pr)	1m 1s
smoke (go)	1m 6s
smoke (gradle-version-catalog)	1m 54s
smoke (gradle)	43s
smoke (hex)	1m 39s
smoke (maven)	56s
smoke (npm-group-multiple)	1m 58s
smoke (npm-group-rules)	1m 30s
smoke (npm-group-semver)	1m 28s
smoke (npm-group-transitive)	1m 26s
smoke (npm-remove-transitive)	55s
smoke (npm)	1m 15s
smoke (nuget)	58s
smoke (pip-compile)	2m 53s
smoke (pip)	1m 8s
smoke (pipenv)	1m 20s
smoke (pnpm)	1m 11s
smoke (poetry)	1m 40s
smoke (pub)	3m 28s
smoke (submodules)	1m 6s
smoke (swift)	1m 35s
smoke (terraform)	59s
smoke (yarn-berry-workspaces)	1m 36s
smoke (yarn-berry)	1m 0s
smoke (yarn)	1m 33s
	47m 27s

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