Remove pip<25.3 constraint

[mahamakifdar19]

Description

• pip has been pinned to pip<25.3 in constraints to fix the ongoing failure in make upgrade jobs.
• See issue pip-tools>7.5.0 incompatibility with pip==25.3 causing the build failures in make upgrade public-engineering#440 for details.

Findings

• The error stemmed from the removal of the legacy setup.py bdist_wheel support in pip which removes the optional flag --use-pip517 that had been added for the support of deprecated legacy functionality.
• Since all versions of pip-tools utilize this flag for the pip-compile command, the new version pip==25.3 is now breaking with all the versions of pip-tools hence the need to pin pip as a solution for this until pip-tools provide a workaround for this issue in their next release.
• Alternatively, it can be explored to keep using latest pip version and switch to the new build setup instead of relying on legacy setup.py bdist_wheel.

TODO

• Once the fix with pip-tools>7.5.1 is released, unpin the constraint pin for pip-tools.
• Test that builds are passing with new version.