Bump cryptography from 46.0.5 to 46.0.6 in /requirements/extras (#327)

Bumps [cryptography](https://github.com/pyca/cryptography) from 46.0.5 to 46.0.6.
- [Changelog](https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst)
- [Commits](pyca/cryptography@46.0.5...46.0.6)

---
updated-dependencies:
- dependency-name: cryptography
  dependency-version: 46.0.6
  dependency-type: direct:production
...

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Author: dependabot[bot]

requirements/extras/cryptography.txt

@@ -1 +1 @@
-cryptography==46.0.5
+cryptography==46.0.6