Restore capture of since parameter

[fcollonval]

Fixes bug introduced in #116

[blink1073]

Thank you!

[codecov-commenter]

Codecov Report

Merging #118 (2c267d5) into master (e1110b4) will decrease coverage by 0.86%.
The diff coverage is 0.00%.

@@            Coverage Diff             @@
##           master     #118      +/-   ##
==========================================
- Coverage   86.22%   85.35%   -0.87%     
==========================================
  Files          17       17              
  Lines        2061     2082      +21     
  Branches      244      248       +4     
==========================================
  Hits         1777     1777              
- Misses        195      216      +21     
  Partials       89       89              

Impacted Files	Coverage Δ
jupyter_releaser/actions/draft_changelog.py	0.00% <0.00%> (ø)
jupyter_releaser/actions/draft_release.py	0.00% <0.00%> (ø)

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