chore: bump helm to 3.16.1

[chenrui333]

seeing some regression test failure while bumping helm to 3.16.0 on the brew side:

==> /opt/homebrew/Cellar/chart-testing/3.11.0/bin/ct lint --charts ./testchart --validate-chart-schema=false --validate-maintainers=false
Version increment checking disabled.
Error: failed linting charts: failed processing charts
Linting charts...

------------------------------------------------------------------------------------------------------------------------
 Charts to be processed:
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 testchart => (version: "0.1.0", path: "./testchart")
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Linting chart "testchart => (version: \"0.1.0\", path: \"./testchart\")"
testchart/values.yaml
  22:2      error    missing starting space in comment  (comments)
  35:112    error    trailing spaces  (trailing-spaces)
  98:2      error    missing starting space in comment  (comments)


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 ✖︎ testchart => (version: "0.1.0", path: "./testchart") > failed waiting for process: exit status 1
------------------------------------------------------------------------------------------------------------------------
failed linting charts: failed processing charts
/opt/homebrew/Library/Homebrew/ignorable.rb:27:in `block in raise'
Minitest::Assertion: Expected: 0
  Actual: 1