BUG: Enable production-deploy on Netlify GitHub Action

Hopefully, this should make itkexamples.netlify.app update with `master` builds.

Author: thewtex

.github/workflows/build-test-publish.yml

@@ -415,6 +415,7 @@ jobs:
         with:
           publish-dir: './site'
           production-branch: master
+          production-deploy: true
           github-token: ${{ secrets.GITHUB_TOKEN }}
           deploy-message: ${{ github.event.pull_request.title }})
           enable-pull-request-comment: true