chore(functions): update hello-firestore dependencies (#14375)

- Bump protobuf, functions-framework, google-api-core, and cloudevents.
   - Remove python version constraint for pytest.

Author: XrossFox

functions/v2/firebase/hello-firestore/requirements-test.txt

@@ -1 +1 @@
-pytest==9.0.3; python_version >= "3.10"
+pytest==9.0.3

functions/v2/firebase/hello-firestore/requirements.txt

@@ -1,5 +1,5 @@
-functions-framework==3.9.2
+protobuf==6.33.6
+functions-framework==3.10.2
 google-events==0.14.0
-google-api-core==2.17.1
-protobuf==4.25.6
-cloudevents==1.11.0
+google-api-core==2.31.0
+cloudevents==1.12.0