Fix BigVGAN _from_pretrained compatibility with newer huggingface_hub

Newer versions of huggingface_hub's PyTorchModelHubMixin no longer pass
'proxies' and 'resume_download' kwargs. Make all _from_pretrained params
optional with defaults to ensure compatibility.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

modules/bigvgan/bigvgan.py

@@ -415,13 +415,13 @@ class BigVGAN(
             cls,
             *,
             model_id: str,
-            revision: str,
-            cache_dir: str,
-            force_download: bool,
-            proxies: Optional[Dict],
-            resume_download: bool,
-            local_files_only: bool,
-            token: Union[str, bool, None],
+            revision: str = None,
+            cache_dir: str = None,
+            force_download: bool = False,
+            proxies: Optional[Dict] = None,
+            resume_download: bool = False,
+            local_files_only: bool = False,
+            token: Union[str, bool, None] = None,
             map_location: str = "cpu",  # Additional argument
             strict: bool = False,  # Additional argument
             use_cuda_kernel: bool = False,