[CI] Add python file format to static checks.

Uses the same version of `black` as godot.

.github/workflows/ci.yml

@@ -179,7 +179,12 @@ jobs:
           sudo apt-get install -qq dos2unix recode clang-format-11
           sudo update-alternatives --remove-all clang-format
           sudo update-alternatives --install /usr/bin/clang-format clang-format /usr/bin/clang-format-11 100
+          python -m pip install black==22.3.0
 
       - name: Style checks via clang-format
         run: |
           bash ./misc/scripts/clang_format.sh
+
+      - name: Python style checks via black (black_format.sh)
+        run: |
+          bash ./misc/scripts/black_format.sh

binding_generator.py

@@ -1132,9 +1132,13 @@ def generate_engine_class_source(class_api, used_classes, fully_used_classes, us
                         is_ref = True
                     else:
                         if method["is_static"]:
-                            method_call += f"return internal::_call_native_mb_ret_obj<{return_type}>(___method_bind, nullptr"
+                            method_call += (
+                                f"return internal::_call_native_mb_ret_obj<{return_type}>(___method_bind, nullptr"
+                            )
                         else:
-                            method_call += f"return internal::_call_native_mb_ret_obj<{return_type}>(___method_bind, _owner"
+                            method_call += (
+                                f"return internal::_call_native_mb_ret_obj<{return_type}>(___method_bind, _owner"
+                            )
                 else:
                     if method["is_static"]:
                         method_call += f"internal::_call_native_mb_no_ret(___method_bind, nullptr"