chore: update releaser go version to 1.21 (#239)

Signed-off-by: Sourya Vatsyayan <sourya@deepsource.io>

Author: sourya-deepsource

.github/workflows/release.yml

@@ -21,7 +21,7 @@ jobs:
       - name: Set up Go
         uses: actions/setup-go@v4
         with:
-          go-version: 1.18
+          go-version: 1.21
 
       - name: Setup environment variables
         run: |-