Update dependency cryptography to v43 (#539)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

poetry.lock

@@ -14,7 +14,7 @@ repository = "https://github.com/canonical/postgresql-operator"
 [tool.poetry.dependencies]
 python = "^3.10"
 ops = "^2.14.1"
-cryptography = "^42.0.8"
+cryptography = "^43.0.0"
 boto3 = "^1.34.143"
 pgconnstr = "^1.0.1"
 requests = "^2.32.3"