pip: bump pytest from 8.3.5 to 8.4.0 (#211)

Bumps [pytest](https://github.com/pytest-dev/pytest) from 8.3.5 to
8.4.0.

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>
Co-authored-by: Doug Flick <dougflick@microsoft.com>

Author: dependabot[bot]

pip-requirements.txt

@@ -1,4 +1,4 @@
 edk2-pytool-library==0.23.2
 edk2-pytool-extensions==0.29.2
 ruff==0.11.12
-pytest==8.3.5
+pytest==8.4.0