Fix generation of BIDS changelog

[sappelhoff]

• follow up to #1832 to maybe fix the issue encountered here: https://app.circleci.com/pipelines/github/bids-standard/bids-specification/7492/workflows/3a0cc3b3-63ed-45e4-a86a-4e2e8e0f9cd2/jobs/22365

Note that these issues seem to have been present for months already, and we didn't catch them, unfortunately.

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 88.04%. Comparing base (40af25c) to head (91bc3f9).

:exclamation: Current head 91bc3f9 differs from pull request most recent head df40ab8

Please upload reports for the commit df40ab8 to get more accurate results.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1835 +/- ## ======================================= Coverage 88.04% 88.04% ======================================= Files 16 16 Lines 1380 1380 ======================================= Hits 1215 1215 Misses 165 165 ```

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[sappelhoff]

getting confusing issues here.

Perhaps it's time we updated github-changelog-generator to a newer version ... not the one from X years, as currently.

So far we were blocked from doing that because of this issue:

• https://github.com/github-changelog-generator/github-changelog-generator/issues/901

... however, I think we can just ignore the base parameter, and do the attachment of our old, manual changelog ourselves with a few lines (1?) of code.

[sappelhoff]

it's really frustrating dealing with github tokens, there are too many, and none seem to work

• classic or fine-grained?
• which permissions, if any?
• created from a user? or an org? ... what rights would a user need to have?

I cannot find our CHANGE_TOKEN "secret" anywhere either. Anyone knows where it was generated?

[sappelhoff]

replacing this PR with https://github.com/bids-standard/bids-specification/pull/1836