ci: bump pip

[Borda]

What does this PR do?

Trying to find a faster version resolution...

Before submitting

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• [x] Did you make sure your PR does only one thing, instead of bundling different changes together?
• [ ] Did you make sure to update the documentation with your changes?
• [ ] Did you write any new necessary tests? [not needed for typos/docs]
• [ ] Did you verify new and existing tests pass locally with your changes?
• [ ] If you made a notable change (that affects users), did you update the CHANGELOG?

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[codecov[bot]]

Codecov Report

Merging #1598 (f63680e) into master (a01eb47) will decrease coverage by 17%. The diff coverage is n/a.

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #1598 +/- ## ======================================== - Coverage 86% 69% -17% ======================================== Files 291 291 Lines 12874 12874 ======================================== - Hits 11016 8878 -2138 - Misses 1858 3996 +2138 ```