update pcodec

[mwlon]

Updated to >=v1, which has various improvements.

[codecov]

Codecov Report

❌ Patch coverage is 0% with 2 lines in your changes missing coverage. Please review.
✅ Project coverage is 2.14%. Comparing base (e0ddee6) to head (caa6064).

Files with missing lines	Patch %	Lines
numcodecs/pcodec.py	0.00%	2 Missing ⚠️

❌ Your project check has failed because the head coverage (2.14%) is below the target coverage (100.00%). You can increase the head coverage or adjust the target coverage.

❗ There is a different number of reports uploaded between BASE (e0ddee6) and HEAD (caa6064). Click for more details.

HEAD has 20 uploads less than BASE

Flag	BASE (e0ddee6)	HEAD (caa6064)
	23	3

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #817       +/-   ##
==========================================
- Coverage   99.33%   2.14%   -97.19%     
==========================================
  Files          26      26               
  Lines         898     884       -14     
==========================================
- Hits          892      19      -873     
- Misses          6     865      +859     

Files with missing lines	Coverage Δ
numcodecs/pcodec.py	0.00% <0.00%> (-100.00%)	⬇️

... and 24 files with indirect coverage changes

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