Bump certifi from 2025.8.3 to 2026.10.19 in /user-auth/graphtutorial

Bumps [certifi](https://github.com/certifi/python-certifi) from 2025.8.3 to 2026.10.19.
- [Commits](certifi/python-certifi@2025.08.03...2026.10.19)

---
updated-dependencies:
- dependency-name: certifi
  dependency-version: 2026.10.19
  dependency-type: indirect
...

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Author: dependabot[bot]

user-auth/graphtutorial/requirements.txt

@@ -24,7 +24,7 @@ azure-identity==1.26.0
     # via
     #   -r requirements.in
     #   msgraph-sdk
-certifi==2025.8.3
+certifi==2026.10.19
     # via
     #   httpcore
     #   httpx