Bump cryptography from 3.4.5 to 39.0.1

Bumps [cryptography](https://github.com/pyca/cryptography) from 3.4.5 to 39.0.1.
- [Release notes](https://github.com/pyca/cryptography/releases)
- [Changelog](https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst)
- [Commits](https://github.com/pyca/cryptography/compare/3.4.5...39.0.1)

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

Signed-off-by: dependabot[bot] <support@github.com>
diff --git a/requirements.txt b/requirements.txt
index a1e8a3d..6011140 100644
--- a/requirements.txt
+++ b/requirements.txt
@@ -22,7 +22,7 @@
 pyasn1==0.4.8
 pyasn1-modules==0.2.8
 service-identity==18.1.0
-cryptography==3.4.5
+cryptography==39.0.1
 cffi==1.14.5
 Twisted==22.4.0
 treq==22.1.0