chore(build): update to Go 1.21

Author: isometry

.github/workflows/release.yml

@@ -16,7 +16,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v4
         with:
-          go-version: 1.19
+          go-version: 1.21
       - name: Run GoReleaser
         uses: goreleaser/goreleaser-action@v5
         with: