chore(deps): bump zarrs_metadata to 0.3.4

[LDeakin]

No description provided.

[codecov]

Codecov Report

Attention: Patch coverage is 66.66667% with 13 lines in your changes missing coverage. Please review.

Project coverage is 80.19%. Comparing base (9971787) to head (d717d2c).
Report is 3 commits behind head on v0.19.x.

Files with missing lines	Patch %	Lines
zarrs/src/group.rs	69.56%	7 Missing ⚠️
zarrs/src/array.rs	45.45%	6 Missing ⚠️

Additional details and impacted files

@@             Coverage Diff             @@
##           v0.19.x     #145      +/-   ##
===========================================
- Coverage    81.92%   80.19%   -1.73%     
===========================================
  Files          170      170              
  Lines        24237    24271      +34     
===========================================
- Hits         19857    19465     -392     
- Misses        4380     4806     +426     

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