ci: upgrade actions to avoid node16 deprecation warning

[tisonkun]

I hereby agree to the terms of the GreptimeDB CLA

What's changed and what's your intention?

See -

• Node 16 deprecation actions/setup-node#850
• https://github.blog/changelog/2023-09-22-github-actions-transitioning-from-node-16-to-node-20/
• ... and what can be foreseen - https://github.blog/changelog/2023-05-04-github-actions-all-actions-will-run-on-node16-instead-of-node12/

Checklist

• I have written the necessary rustdoc comments.
• I have added the necessary unit tests and integration tests.
• This PR does not require documentation updates.

Refer to a related PR or issue link (optional)

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (2a26c01) 85.53% compared to head (5adbb95) 85.11%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3317      +/-   ##
==========================================
- Coverage   85.53%   85.11%   -0.42%     
==========================================
  Files         872      872              
  Lines      141967   141967              
==========================================
- Hits       121434   120839     -595     
- Misses      20533    21128     +595     

[zyy17]

lgtm