Updated go version to 1.21 in workflows build

Author: mboben

.github/workflows/go.yml

@@ -16,7 +16,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@v3
       with:
-        go-version: "1.18"
+        go-version: "1.21"
 
     - name: Download modules
       run: go mod download