Bump cryptography from 38.0.3 to 39.0.1 in /pay-api (#1094)

Bumps [cryptography](https://github.com/pyca/cryptography) from 38.0.3 to 39.0.1.
- [Release notes](https://github.com/pyca/cryptography/releases)
- [Changelog](https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst)
- [Commits](pyca/cryptography@38.0.3...39.0.1)

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

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

pay-api/requirements.txt

@@ -23,7 +23,7 @@ cffi==1.15.1
 charset-normalizer==2.1.1
 click==8.1.3
 croniter==1.3.7
-cryptography==38.0.3
+cryptography==39.0.1
 dpath==2.0.6
 ecdsa==0.18.0
 expiringdict==1.2.2