add python-crontab for scheduler extension

[bitkarrot]

• see pyproject.toml for the dependency addition, and comment by @motorina0 here: Scheduler Action bitkarrot/scheduler#8 (comment)

[prusnak]

you need to also run poetry lock --no-update so poetry.lock file is refreshed

[codecov]

Codecov Report

Merging #2032 (2e56504) into dev (00c3b69) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##              dev    #2032   +/-   ##
=======================================
  Coverage   61.70%   61.70%           
=======================================
  Files          55       55           
  Lines        8068     8068           
=======================================
  Hits         4978     4978           
  Misses       3090     3090           

see 1 file with indirect coverage changes

📣 We’re building smart automated test selection to slash your CI/CD build times. Learn more

[bitkarrot]

you need to also run poetry lock --no-update so poetry.lock file is refreshed

OK I ran the above and checked in the poetry.lock file. Let me know if its correct or not.

[prusnak]

@bitkarrot you are running old version of poetry (1.4.2) while the poetry lock has been generated with a newer one (1.5.1). The older version added lot of unneeded stuff, so I rerun the poetry lock --no-update with a newer version and replaced the last commit in your PR branch.

[bitkarrot]

Ok whoops I will update my poetry now. It auto updated to 1.6.1

Thanks for updating the file. @prusnak