pip: bump regex from 2023.5.4 to 2023.5.5 (#538)

Bumps [regex](https://github.com/mrabarnett/mrab-regex) from 2023.5.4 to
2023.5.5.

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

pip-requirements.txt

@@ -15,4 +15,4 @@
 edk2-pytool-library==0.14.1
 edk2-pytool-extensions==0.23.0
 xmlschema==2.2.3
-regex==2023.5.4
+regex==2023.5.5