Update ruff.toml to not format grpc/ directory

Author: holtskinner

.github/linters/.ruff.toml

@@ -140,7 +140,7 @@ inline-quotes = "single"
 "types.py" = ["D", "E501", "N815"]  # Ignore docstring and annotation issues in types.py
 
 [format]
-exclude = ["types.py", "src/a2a/grpc/**"]
+exclude = ["types.py", "src/a2a/grpc/*.*"]
 docstring-code-format = true
 docstring-code-line-length = "dynamic" # Or set to 80
 quote-style = "single"