fix: fix CI tests

Samuel Allanrequested to merge
samuel/fix-ci into master

Description

  • pin setuptools to v81 to avoid losing pkg_resources
  • update pyyaml to fix build error: AttributeError: 'build_ext' object has no attribute 'cython_sources'

Supporting information

Private-ref: https://tasks.opencraft.com/browse/BB-10615

Testing instructions

  • verify the CI passes

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