Update go version in README #176

Job	Run time
build	6m 44s
test-sensor-e2e (ubuntu-latest)	33m 55s
test-full-e2e (ubuntu-latest, compose)	34s
test-full-e2e (ubuntu-latest, distroless)	34s
test-full-e2e (ubuntu-latest, dotnet)	31s
test-full-e2e (ubuntu-latest, elixir)	15s
test-full-e2e (ubuntu-latest, golang)	23s
test-full-e2e (ubuntu-latest, haskell)	34s
test-full-e2e (ubuntu-latest, http-probe)	33s
test-full-e2e (ubuntu-latest, image-edit)	33s
test-full-e2e (ubuntu-latest, java)	32s
test-full-e2e (ubuntu-latest, node)	32s
test-full-e2e (ubuntu-latest, php)	33s
test-full-e2e (ubuntu-latest, python)	32s
test-full-e2e (ubuntu-latest, ruby)	14s
test-full-e2e (ubuntu-latest, rust)	13s
	47m 12s

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