chore: update release go version to 1.21

.github/workflows/release.yml

@@ -121,7 +121,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v4
         with:
-          go-version: ^1.20
+          go-version: ^1.21
 
       - name: Get project dependencies
         run: go mod download
@@ -189,7 +189,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v4
         with:
-          go-version: ^1.20
+          go-version: ^1.21
 
       - uses: actions/download-artifact@v3
         with: