chore: bump azure/webapps-deploy from 2 to 3 (#261)

Bumps [azure/webapps-deploy](https://github.com/azure/webapps-deploy) from 2 to 3.
- [Release notes](https://github.com/azure/webapps-deploy/releases)
- [Commits](Azure/webapps-deploy@v2...v3)

---
updated-dependencies:
- dependency-name: azure/webapps-deploy
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

.github/workflows/ci.yml

@@ -47,7 +47,7 @@ jobs:
 
       - name: Azure Deploy
         if: env.UNITYNUGET_DEPLOY == 1
-        uses: azure/webapps-deploy@v2
+        uses: azure/webapps-deploy@v3
         with:
           app-name: unitynuget-registry
           publish-profile: ${{ secrets.AZURE_WEBAPP_PUBLISH_PROFILE }}