fix(python): generator cli config uses .dict instead of .json (#4976)

generators/python/sdk/versions.yml

@@ -1,11 +1,18 @@
 # For unreleased changes, use unreleased.yml
+- version: 4.3.3
+  irVersion: 53
+  changelogEntry:
+    - type: fix
+      summary: |
+        The generator now writes the reference.md configuration correctly, using `.dict()` instead of `.json()`.
+        
 - version: 4.3.2
   irVersion: 53
   changelogEntry:
     - type: fix
       summary: |
         The generator will now correctly default to the configured global `default_bytes_stream_chunk_size` when the `request_options` parameter is not provided.
-
+        
 - version: 4.3.1
   irVersion: 53
   changelogEntry:

generators/python/src/fern_python/generator_cli/generator_cli.py

@@ -1,3 +1,4 @@
+import json
 import os
 import subprocess
 import tempfile
@@ -78,6 +79,9 @@ def generate_reference(self, snippets: generator_exec.Snippets, project: Project
         reference_config = reference_config_builder.generate_reference_config()
         if self._should_write_reference(reference_config):
             reference_config_filepath = self._write_reference_config(reference_config=reference_config)
+            print(
+                f"running command: {' '.join([GENERATOR_CLI, 'generate-reference', '--config', reference_config_filepath])}"
+            )
             return self._run_command(
                 command=[GENERATOR_CLI, "generate-reference", "--config", reference_config_filepath]
             )
@@ -128,7 +132,7 @@ def _write_reference_config(
         reference_config: generatorcli.reference.ReferenceConfig,
     ) -> str:
         file = tempfile.NamedTemporaryFile(delete=False, mode="w+")
-        file.write(reference_config.json())
+        file.write(json.dumps(reference_config.dict()))
         file.flush()
         return file.name
 
@@ -144,7 +148,7 @@ def _write_readme_config(
             github_installation_token=github_installation_token,
         )
         file = tempfile.NamedTemporaryFile(delete=False, mode="w+")
-        file.write(readme_config.json())
+        file.write(json.dumps(readme_config.dict()))
         file.flush()
         return file.name