Bump regex from 2024.11.6 to 2025.9.1

Bumps [regex](https://github.com/mrabarnett/mrab-regex) from 2024.11.6 to 2025.9.1.
- [Changelog](https://github.com/mrabarnett/mrab-regex/blob/hg/changelog.txt)
- [Commits](mrabarnett/mrab-regex@2024.11.6...2025.9.1)

---
updated-dependencies:
- dependency-name: regex
  dependency-version: 2025.9.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

requirements.txt

@@ -2,5 +2,5 @@ cffi
 gevent==25.5.1
 msgspec @ git+https://github.com/jcrist/msgspec@595c33c4a71c6d0c539b82233982a65819e240cf
 mysqlclient==2.2.7
-regex==2024.11.6
+regex==2025.9.1
 rcssmin==1.2.1