chore: release v0.16.0

[shuuji3]

creating PR as I couldn't take a shortcut for the branch protection rule:

[elk-release]  main (3902bac🔖 v0.16.0) [⇡] is 󰏗 v0.16.0 via  v20.18.1 󱇶 shuuji3 ⏱ 3s 
> git push
Total 0 (delta 0), reused 0 (delta 0), pack-reused 0
remote: error: GH006: Protected branch update failed for refs/heads/main.
remote: 
remote: - Changes must be made through the merge queue
remote: 
remote: - Required status check "ci" is expected.
To https://github.com/elk-zone/elk.git
 ! [remote rejected]   main -> main (protected branch hook declined)
error: failed to push some refs to 'https://github.com/elk-zone/elk.git'

Done

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