fixate grpc version

cw_bitcoin/pubspec.lock

@@ -468,10 +468,10 @@ packages:
     dependency: transitive
     description:
       name: googleapis_auth
-      sha256: b81fe352cc4a330b3710d2b7ad258d9bcef6f909bb759b306bf42973a7d046db
+      sha256: befd71383a955535060acde8792e7efc11d2fccd03dd1d3ec434e85b68775938
       url: "https://pub.dev"
     source: hosted
-    version: "2.0.0"
+    version: "1.6.0"
   graphs:
     dependency: transitive
     description:
@@ -484,10 +484,10 @@ packages:
     dependency: "direct main"
     description:
       name: grpc
-      sha256: "2dde469ddd8bbd7a33a0765da417abe1ad2142813efce3a86c512041294e2b26"
+      sha256: "5b99b7a420937d4361ece68b798c9af8e04b5bc128a7859f2a4be87427694813"
       url: "https://pub.dev"
     source: hosted
-    version: "4.1.0"
+    version: "4.0.1"
   hex:
     dependency: transitive
     description:

cw_bitcoin/pubspec.yaml

@@ -32,7 +32,7 @@ dependencies:
       ref: cake-update-v2
   cw_mweb:
     path: ../cw_mweb
-  grpc: ^4.0.1
+  grpc: 4.0.1
   sp_scanner:
     git:
       url: https://github.com/cake-tech/sp_scanner

cw_mweb/pubspec.yaml

@@ -10,7 +10,7 @@ environment:
 dependencies:
   flutter:
     sdk: flutter
-  grpc: ^4.0.1
+  grpc: 4.0.1
   path_provider: ^2.1.2
   plugin_platform_interface: ^2.0.2
   cw_core: