chore(deps): bump nodebb-theme-persona from 12.0.8 to 12.0.9 in /install

Bumps [nodebb-theme-persona](https://github.com/NodeBB/nodebb-theme-persona) from 12.0.8 to 12.0.9.
- [Release notes](https://github.com/NodeBB/nodebb-theme-persona/releases)
- [Commits](https://github.com/NodeBB/nodebb-theme-persona/compare/v12.0.8...v12.0.9)

---
updated-dependencies:
- dependency-name: nodebb-theme-persona
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

install/package.json

@@ -97,7 +97,7 @@
         "nodebb-plugin-spam-be-gone": "1.0.0",
         "nodebb-rewards-essentials": "0.2.1",
         "nodebb-theme-lavender": "6.0.0",
-        "nodebb-theme-persona": "12.0.8",
+        "nodebb-theme-persona": "12.0.9",
         "nodebb-theme-slick": "2.0.2",
         "nodebb-theme-vanilla": "12.1.17",
         "nodebb-widget-essentials": "6.0.0",