chore(bot): bump phoenix from 1.8.2 to 1.8.3 in /assets

Bumps [phoenix](https://github.com/phoenixframework/phoenix) from 1.8.2 to 1.8.3.
- [Release notes](https://github.com/phoenixframework/phoenix/releases)
- [Changelog](https://github.com/phoenixframework/phoenix/blob/main/CHANGELOG.md)
- [Commits](phoenixframework/phoenix@v1.8.2...v1.8.3)

---
updated-dependencies:
- dependency-name: phoenix
  dependency-version: 1.8.3
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

assets/package-lock.json

@@ -20,7 +20,7 @@
     "eslint-plugin-prettier": "^5.5.4",
     "globals": "^16.5.0",
     "npm-run-all": "^4.1.5",
-    "phoenix": "^1.8.2",
+    "phoenix": "^1.8.3",
     "phoenix_live_view": "^1.1.18",
     "prettier": "3.7.4",
     "sortablejs": "^1.15.6",