build(deps): bump regex from 2026.7.10 to 2026.7.19

Bumps [regex](https://github.com/mrabarnett/mrab-regex) from 2026.7.10 to 2026.7.19.
- [Changelog](https://github.com/mrabarnett/mrab-regex/blob/hg/changelog.txt)
- [Commits](mrabarnett/mrab-regex@2026.7.10...2026.7.19)

---
updated-dependencies:
- dependency-name: regex
  dependency-version: 2026.7.19
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

requirements.txt

@@ -44,7 +44,7 @@ pymongo==4.17.0
 python-dateutil==2.9.0.post0
 python-dotenv==1.2.2
 pyunormalize==17.0.0
-regex==2026.7.10
+regex==2026.7.19
 requests==2.34.2
 rlp==4.1.0
 scikit-learn==1.9.0