Bump cryptography from 42.0.8 to 43.0.0 in /client

Bumps [cryptography](https://github.com/pyca/cryptography) from 42.0.8 to 43.0.0.
- [Changelog](https://github.com/pyca/cryptography/blob/main/CHANGELOG.rst)
- [Commits](pyca/cryptography@42.0.8...43.0.0)

---
updated-dependencies:
- dependency-name: cryptography
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

client/pyproject.toml

@@ -17,7 +17,7 @@ classifiers = [
 dependencies = [
     "dnspython == 2.6.1",
     "PyYAML == 6.0.1",
-    "cryptography == 42.0.8",
+    "cryptography == 43.0.0",
     "pid == 3.0.4",
 ]