chore: bump opendal to v0.44.2

[WenyXu]

I hereby agree to the terms of the GreptimeDB CLA

What's changed and what's your intention?

Bump OpenDAL to v0.44.2.

Now the concurrent writer is available, usage:

let mut w = op.writer_with(path).concurrent(8).await;

See also:

• RFC-3898: Concurrent Writer apache/opendal#3898
• feat(core/bench): Add benchmark for concurrent write apache/opendal#3942
• https://github.com/apache/opendal/releases/tag/v0.44.2

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 (440cd00) 85.86% compared to head (267fa75) 85.33%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #3209      +/-   ##
==========================================
- Coverage   85.86%   85.33%   -0.53%     
==========================================
  Files         839      839              
  Lines      137421   137441      +20     
==========================================
- Hits       117990   117290     -700     
- Misses      19431    20151     +720