Bump cryptography from 3.3.2 to 41.0.3 in /tests

Bumps [cryptography](https://github.com/pyca/cryptography) from 3.3.2 to 41.0.3.
- [Changelog](https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst)
- [Commits](pyca/cryptography@3.3.2...41.0.3)

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

Signed-off-by: dependabot[bot] <[email protected]>

tests/requirements.txt

@@ -1,6 +1,6 @@
 codecov==2.0.15
 coverage==4.5.3
-cryptography==3.3.2
+cryptography==41.0.3
 flake8
 pytest==5.0.1
 pytest-cov==2.7.1