Fix post-release issues.

[tobiasraabe]

Changes

Provide a description and/or bullet points to describe the changes in this PR.

Todo

• Reference issues which can be closed due to this PR with "Closes #x".
• Review whether the documentation needs to be updated.
• Document PR in docs/changes.rst.

[codecov]

Codecov Report

Merging #10 (f88347f) into main (1f2086e) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##             main      #10   +/-   ##
=======================================
  Coverage   99.08%   99.08%           
=======================================
  Files          13       13           
  Lines         328      328           
=======================================
  Hits          325      325           
  Misses          3        3           

Flag	Coverage Δ
end_to_end	86.58% <ø> (ø)
unit	67.98% <ø> (ø)

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