[renovate] don't touch go version in go.mod #3624

Job	Run time
code-scanning / Analyze Go code with CodeQL	1m 20s
variables / variables	6s
config-checks / helm-lint	8s
golang-checks / go-build	32s
config-checks / validate-helm-values	29s
config-checks / validate-csv	34s
golang-checks / unit tests	17s
golang-checks / go-check	19s
coverage	0s
image-builds	0s
e2e-tests	-1s
release	-1s
	3m 43s

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