pip: bump regex from 2023.6.3 to 2023.8.8 (#165)

Bumps [regex](https://github.com/mrabarnett/mrab-regex) from 2023.6.3 to
2023.8.8.

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

pip-requirements.txt

@@ -16,4 +16,4 @@ edk2-pytool-library==0.16.1
 edk2-pytool-extensions==0.23.10
 edk2-basetools==0.1.39
 antlr4-python3-runtime==4.13.0
-regex==2023.6.3
+regex==2023.8.8