use go 1.21

.github/workflows/go.yml

@@ -25,7 +25,7 @@ jobs:
     - name: Set up Go
       uses: actions/setup-go@0c52d547c9bc32b1aa3301fd7a9cb496313a4491 # v5.0.0
       with:
-        go-version: 1.19
+        go-version: 1.21
 
     - name: Build
       run: go build -v .

go.mod

@@ -1,6 +1,6 @@
 module github.com/Azure/go-asynctask
 
-go 1.20
+go 1.21
 
 require github.com/stretchr/testify v1.8.4