Python dependency: Bump certifi in /web/regression

Bumps [certifi](https://github.com/certifi/python-certifi) from 2026.7.22 to 2026.10.19.
- [Commits](https://github.com/certifi/python-certifi/compare/2026.07.22...2026.10.19)

---
updated-dependencies:
- dependency-name: certifi
  dependency-version: 2026.10.19
  dependency-type: direct:production
...

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

requirements.txt

@@ -24,7 +24,7 @@ azure-mgmt-subscription==3.1.1
 bcrypt==5.0.*
 boto3==1.42.*; python_version <= '3.9'
 boto3==1.43.*; python_version > '3.9'
-certifi==2026.7.22
+certifi==2026.10.19
 cryptography==50.0.*
 Flask-Babel==4.0.*
 Flask-Compress==1.*