Fix build warnings (#12)

Author: paulb777

Sources/Internal/OperationsManager.swift

@@ -35,20 +35,20 @@ class OperationsManager {
           request: request,
           dataType: resultType,
           grpcClient: self.grpcClient
-        ) as! (any ObservableQueryRef)
+        ) as (any ObservableQueryRef)
       } else {
         return QueryRefObservableObject<ResultDataType, VariableType>(
           request: request,
           dataType: resultType,
           grpcClient: grpcClient
-        ) as! (any ObservableQueryRef)
+        ) as (any ObservableQueryRef)
       }
     case .observableObject:
       return QueryRefObservableObject<ResultDataType, VariableType>(
         request: request,
         dataType: resultType,
         grpcClient: grpcClient
-      ) as! (any ObservableQueryRef)
+      ) as (any ObservableQueryRef)
     }
   }
 

Sources/ProtoGen/connector_service.grpc.swift

@@ -272,7 +272,8 @@ public struct Google_Firebase_Dataconnect_V1alpha_ConnectorServiceNIOClient: Goo
 
 #endif // compiler(>=5.6)
 
-public protocol Google_Firebase_Dataconnect_V1alpha_ConnectorServiceClientInterceptorFactoryProtocol: GRPCSendable {
+public protocol Google_Firebase_Dataconnect_V1alpha_ConnectorServiceClientInterceptorFactoryProtocol:
+  Swift.Sendable {
   /// - Returns: Interceptors to use when invoking 'executeQuery'.
   func makeExecuteQueryInterceptors() -> [ClientInterceptor<
     Google_Firebase_Dataconnect_V1alpha_ExecuteQueryRequest,