Fix handling of nested resource files

[blink1073]

No description provided.

[codecov-commenter]

Codecov Report

Merging #308 (78c104a) into main (345b7df) will decrease coverage by 0.06%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##             main     #308      +/-   ##
==========================================
- Coverage   83.94%   83.87%   -0.07%     
==========================================
  Files          19       19              
  Lines        2553     2555       +2     
  Branches      336      336              
==========================================
  Hits         2143     2143              
- Misses        294      302       +8     
+ Partials      116      110       -6     

Impacted Files	Coverage Δ
jupyter_releaser/python.py	72.72% <100.00%> (ø)
jupyter_releaser/tests/test_cli.py	99.05% <100.00%> (+<0.01%)	⬆️
jupyter_releaser/tee.py	77.77% <0.00%> (-2.78%)	⬇️
jupyter_releaser/util.py	69.59% <0.00%> (ø)
jupyter_releaser/actions/common.py	0.00% <0.00%> (ø)
jupyter_releaser/actions/draft_release.py	0.00% <0.00%> (ø)
jupyter_releaser/actions/draft_changelog.py	0.00% <0.00%> (ø)

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