fix(test): prepare connector libs path for iceberg sink test

[chenzl25]

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What's changed and what's your intention?

Checklist

• I have written necessary rustdoc comments
• I have added necessary unit tests and integration tests
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[codecov]

Codecov Report

Merging #12579 (1c64ed7) into main (48b8501) will decrease coverage by 0.01%.
Report is 2 commits behind head on main.
The diff coverage is n/a.

@@            Coverage Diff             @@
##             main   #12579      +/-   ##
==========================================
- Coverage   69.41%   69.40%   -0.01%     
==========================================
  Files        1469     1469              
  Lines      240691   240691              
==========================================
- Hits       167070   167063       -7     
- Misses      73621    73628       +7     

Flag	Coverage Δ
rust	69.40% <ø> (-0.01%)	⬇️

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[tabVersion]

should we also expose it in risedev? as well as dockerfiles?

[chenzl25]

should we also expose it in risedev? as well as dockerfiles?

Both risedev and dockerfiles have been specified previously. We missed this one because our pull request ci doesn't run iceberg sink test.