Don't error on type changes, cast to string and compare (ansible#52505)

Author: sivel

test/sanity/validate-modules/main.py

@@ -1404,7 +1404,7 @@ def _check_for_new_args(self, doc, metadata):
                     if existing_version:
                         break
                 current_version = details.get('version_added')
-                if current_version != existing_version:
+                if str(current_version) != str(existing_version):
                     self.reporter.error(
                         path=self.object_path,
                         code=309,