Run pub in verbose mode on windows-arm64

This is just intended to debug a GitHub Actions build failure.

Author: nex3

.github/workflows/build-windows.yml

@@ -35,7 +35,7 @@ jobs:
         with: {github_token: "${{ github.token }}"}
 
       - name: Install Dependencies
-        run: dart pub get
+        run: dart pub get --verbose
 
       - name: Compile Protobuf
         run: dart run grinder protobuf