Update cryptography upper bound

Also remove direct dependency on cffi as it is only used by cryptography

Author: gps035

poetry.lock

@@ -1,6 +1,6 @@
 [tool.poetry]
 name = "proxygen-cli"
-version = "3.0.0"
+version = "3.0.1"
 description = "CLI for interacting with NHSD APIM's proxygen service"
 authors = ["Ben Strutt <ben.strutt1@nhs.net>"]
 readme = "README.md"
@@ -17,12 +17,11 @@ click="^8.1.2"
 pyjwt = "^2.9.0"
 requests = "^2.32.3"
 lxml = "^6.0.1"
-cryptography = "44.0.1"
+cryptography = ">= 44.0.1, < 47.0.0" # Not directly imported, but needed by pyjwt for the RS512 algorithm
 pyyaml = "^6.0.3"
 yaspin = "^3.2.0"
 tabulate = "^0.9.0"
 packaging = "^24.2"
-cffi = "^1.17.1"
 
 [tool.poetry.group.dev.dependencies]
 pytest = "^8.4.2"