ci: add update helm pipeline

[Stab123]

What's changed and what's your intention?

PLEASE DO NOT LEAVE THIS EMPTY !!!

Please explain IN DETAIL what the changes are in this PR and why they are needed:

• Summarize your change (mandatory)
• How does this PR work? Need a brief introduction for the changed logic (optional)
• Describe clearly one logical change and avoid lazy messages (optional)
• Describe any limitations of the current code (optional)

Checklist

• [ ] I have written the necessary docs and comments
• [ ] I have added necessary unit tests and integration tests

Refer to a related PR or issue link (optional)

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 55.74%. Comparing base (d7081a7) to head (ad0bac8).

Additional details and impacted files

```diff @@ Coverage Diff @@ ## main #664 +/- ## ======================================= Coverage 55.74% 55.74% ======================================= Files 38 38 Lines 6480 6480 ======================================= Hits 3612 3612 Misses 2755 2755 Partials 113 113 ``` | [Flag](https://app.codecov.io/gh/risingwavelabs/risingwave-operator/pull/664/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=risingwavelabs) | Coverage Δ | | |---|---|---| | [unittests](https://app.codecov.io/gh/risingwavelabs/risingwave-operator/pull/664/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=risingwavelabs) | `55.74% <ø> (ø)` | | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=risingwavelabs#carryforward-flags-in-the-pull-request-comment) to find out more.

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