DEV: Fix changelog generator regarding whitespace and handling of "Other" group

[stefan6419846]

While having a look at generating a possible changelog for a new release, I stumbled upon some small bugs in the make_release.py script which are fixed by this PR:

• The "Other" group would incorrectly render the list representation of the current group instead of the actual entries: [{'msg': ' Broken test due to expired test file URL (#2468)', 'author': 'pubpub-zz'}]

• All groups would start with a leading whitespace, except the "Other" group:

  ### Testing (TST)
  -  Fix benchmark failures (#2481)
  -  Resolve file naming conflict in test_iss1767 (#2445)
  
  ### Other
  - : [{'msg': 'Improve lossless compression example (#2488)', 'author': 'j-t-1'}]
  - FIX: [{'msg': ' Broken test due to expired test file URL (#2468)', 'author': 'pubpub-zz'}]
  

To ensure that everything is working as intended, the tests have been fixed/extended to cover the current error cases.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 94.54%. Comparing base (719ff25) to head (d2f196b).
Report is 1 commits behind head on main.

❗ Current head d2f196b differs from pull request most recent head 8efe8db. Consider uploading reports for the commit 8efe8db to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2492      +/-   ##
==========================================
- Coverage   94.67%   94.54%   -0.14%     
==========================================
  Files          50       49       -1     
  Lines        8231     8176      -55     
  Branches     1646     1659      +13     
==========================================
- Hits         7793     7730      -63     
- Misses        268      276       +8     
  Partials      170      170              

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[pubpub-zz]

@MartinThoma
Can you have a review of this PR : You will be more relevant than I am

[pubpub-zz]

@MartinThoma Can you have a review of this PR : You will be more relevant than I am

+1 ?

[MartinThoma]

Sorry, I was pretty busy with the improvements in the house and had no energy for pypdf for a while 🙈

[MartinThoma]

Thank you for improving our DEV tools / CI 🙏

[stefan6419846]

It seems like something went wrong with the merge.

[stefan6419846]

Sorry, I was pretty busy with the improvements in the house and had no energy for pypdf for a while 🙈

No worries. It's still mostly FOSS done in the free time, thus enforcing such things does not feel right anyway ;)

Thank you for improving our DEV tools / CI 🙏

It seems like my fixes for the broken upstream merge removed your approval again. And yes, as long as I use it and I spot solvable issues, I try to fix it as well to reduce the manual work required afterwards.