add actions/setup-go to workflow

Signed-off-by: Joel Dice <joel.dice@fermyon.com>

Author: dicej

.github/workflows/main.yml

@@ -76,7 +76,7 @@ jobs:
 
     - run: rustup target add wasm32-unknown-unknown
       if: matrix.lang == 'rust'
-
+          
     - uses: ./.github/actions/install-wasi-sdk
 
     - name: Setup .NET
@@ -85,6 +85,12 @@ jobs:
         dotnet-version: '9.x'
       if: matrix.lang == 'csharp'
 
+    - name: Setup Go
+      uses: actions/setup-go@v5
+      with:
+        go-version: 1.25.4
+      if: matrix.lang == 'go'
+
       # Hacky work-around for https://github.com/dotnet/runtime/issues/80619
     - run: dotnet new console -o /tmp/foo
       if: matrix.os != 'windows-latest' && matrix.lang == 'csharp'