ci(package-publishing): add sandbox environment usage (#134)

This commit updates the environment usage for snapshot releases workflow to use the sandbox environment to publish the package.

Author: sufyankhanrao

.github/workflows/snapshot-release.yml

@@ -12,7 +12,7 @@ jobs:
   publish:
     name: Publish the Maven package
     runs-on: ubuntu-latest
-    environment: Production
+    environment: Sandbox
     steps:
       - name: Check out git repository
         uses: actions/checkout@v2