fix: use discrete return type instead of impl

Author: OliverNChalk

yellowstone-grpc-client/src/lib.rs

@@ -244,7 +244,7 @@ impl GeyserGrpcBuilder {
     fn build(
         self,
         channel: Channel,
-    ) -> GeyserGrpcBuilderResult<GeyserGrpcClient<impl Interceptor>> {
+    ) -> GeyserGrpcBuilderResult<GeyserGrpcClient<InterceptorXToken>> {
         let interceptor = InterceptorXToken {
             x_token: self.x_token,
             x_request_snapshot: self.x_request_snapshot,
@@ -270,12 +270,12 @@ impl GeyserGrpcBuilder {
         ))
     }
 
-    pub async fn connect(self) -> GeyserGrpcBuilderResult<GeyserGrpcClient<impl Interceptor>> {
+    pub async fn connect(self) -> GeyserGrpcBuilderResult<GeyserGrpcClient<InterceptorXToken>> {
         let channel = self.endpoint.connect().await?;
         self.build(channel)
     }
 
-    pub fn connect_lazy(self) -> GeyserGrpcBuilderResult<GeyserGrpcClient<impl Interceptor>> {
+    pub fn connect_lazy(self) -> GeyserGrpcBuilderResult<GeyserGrpcClient<InterceptorXToken>> {
         let channel = self.endpoint.connect_lazy();
         self.build(channel)
     }