ci: enable Strict mypy typing

[codecov[bot]]

Codecov Report

Merging #138 (0937a6f) into main (a840a29) will increase coverage by 0.55%. The diff coverage is 96.15%.

:exclamation: Current head 0937a6f differs from pull request most recent head 1f783fc. Consider uploading reports for the commit 1f783fc to get more accurate results

@@            Coverage Diff             @@
##             main     #138      +/-   ##
==========================================
+ Coverage   91.38%   91.94%   +0.55%     
==========================================
  Files          13       13              
  Lines        1962     1949      -13     
==========================================
- Hits         1793     1792       -1     
+ Misses        169      157      -12     

Impacted Files	Coverage Δ
src/nd2/_clx_lite.py	97.02% <80.00%> (ø)
src/nd2/_legacy/_legacy_xml.py	97.50% <90.90%> (+0.06%)	:arrow_up:
src/nd2/_binary.py	85.41% <100.00%> (ø)
src/nd2/_clx_xml.py	92.30% <100.00%> (+0.20%)	:arrow_up:
src/nd2/_legacy/_legacy.py	89.90% <100.00%> (+4.62%)	:arrow_up:
src/nd2/_pysdk/_chunk_decode.py	84.44% <100.00%> (ø)
src/nd2/_pysdk/_parse.py	95.67% <100.00%> (ø)
src/nd2/_pysdk/_pysdk.py	91.08% <100.00%> (-0.11%)	:arrow_down:
src/nd2/_util.py	86.95% <100.00%> (+0.28%)	:arrow_up:
src/nd2/nd2file.py	89.06% <100.00%> (ø)

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