Update cryptography requirement from <42 to <43

Updates the requirements on [cryptography](https://github.com/pyca/cryptography) to permit the latest version.
- [Changelog](https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst)
- [Commits](pyca/cryptography@0.1...42.0.1)

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

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

pyproject.toml

@@ -24,7 +24,7 @@ classifiers = [
 requires-python = ">=3.11"
 dependencies = [
     "click<9",
-    "cryptography<42",
+    "cryptography<43",
     "fastapi<1",
     "gidgethub<6",
     "httpx>=0.20.0,<1",