chore(deps): update golang docker tag to v1.16

[renovate[bot]]

This PR contains the following updates:

Package	Type	Update	Change
golang	final	minor	1.15 -> 1.16

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[github-actions[bot]]

🏷️ [bumpr] Next version:v1.4.3 Changes:v1.4.2...reviewdog:renovate/docker-golang-1.x

[github-actions[bot]]

🚀 [bumpr] Bumped! New version:v1.4.3 Changes:v1.4.2...v1.4.3