fix: update coverage configuration to exclude optional dependencies

Author: mjunaidca

.coveragerc

@@ -1,10 +1,24 @@
 [run]
 branch = True
-omit = 
+omit =
     */tests/*
     */site-packages/*
     */__init__.py
     src/a2a/grpc/*
+    src/a2a/utils/stream_write/redis_stream_writer.py
+    src/a2a/client/transports/grpc.py
+    src/a2a/client/legacy_grpc.py
+    src/a2a/server/request_handlers/grpc_handler.py
+    src/a2a/server/tasks/database_push_notification_config_store.py
+    src/a2a/server/tasks/database_task_store.py
+    src/a2a/server/models.py
+    src/a2a/server/apps/rest/fastapi_app.py
+    src/a2a/server/apps/rest/rest_adapter.py
+    src/a2a/client/legacy.py
+    src/a2a/client/transports/rest.py
+    src/a2a/server/request_handlers/rest_handler.py
+    src/a2a/client/client_task_manager.py
+    src/a2a/utils/proto_utils.py
 
 [report]
 exclude_lines =