Bump eslint-plugin-prettier in /app-auth/graphapponlytutorial

Bumps [eslint-plugin-prettier](https://github.com/prettier/eslint-plugin-prettier) from 5.2.5 to 5.2.6.
- [Release notes](https://github.com/prettier/eslint-plugin-prettier/releases)
- [Changelog](https://github.com/prettier/eslint-plugin-prettier/blob/main/CHANGELOG.md)
- [Commits](prettier/eslint-plugin-prettier@v5.2.5...v5.2.6)

---
updated-dependencies:
- dependency-name: eslint-plugin-prettier
  dependency-version: 5.2.6
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

app-auth/graphapponlytutorial/package-lock.json

@@ -15,7 +15,7 @@
     "eslint": "^9.23.0",
     "eslint-config-prettier": "^9.1.0",
     "eslint-plugin-header": "^3.1.1",
-    "eslint-plugin-prettier": "^5.2.5",
+    "eslint-plugin-prettier": "^5.2.6",
     "prettier": "^3.5.3"
   },
   "dependencies": {