chore(deps): bump nodebb-theme-persona in /install (#10199)

Bumps [nodebb-theme-persona](https://github.com/NodeBB/nodebb-theme-persona) from 11.3.19 to 11.3.20.
- [Release notes](https://github.com/NodeBB/nodebb-theme-persona/releases)
- [Commits](https://github.com/NodeBB/nodebb-theme-persona/compare/v11.3.19...v11.3.20)

---
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>

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

install/package.json

@@ -94,7 +94,7 @@
         "nodebb-plugin-spam-be-gone": "0.7.12",
         "nodebb-rewards-essentials": "0.2.1",
         "nodebb-theme-lavender": "5.3.2",
-        "nodebb-theme-persona": "11.3.19",
+        "nodebb-theme-persona": "11.3.20",
         "nodebb-theme-slick": "1.4.23",
         "nodebb-theme-vanilla": "12.1.16",
         "nodebb-widget-essentials": "5.0.4",