Bump rails-assets-leaflet.markercluster from 1.4.1 to 1.5.3

Bumps rails-assets-leaflet.markercluster from 1.4.1 to 1.5.3.

---
updated-dependencies:
- dependency-name: rails-assets-leaflet.markercluster
  dependency-version: 1.5.3
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Gemfile.lock

@@ -26,8 +26,8 @@ GIT
 GEM
   remote: https://rails-assets.org/
   specs:
-    rails-assets-leaflet (1.5.1)
-    rails-assets-leaflet.markercluster (1.4.1)
+    rails-assets-leaflet (1.9.4)
+    rails-assets-leaflet.markercluster (1.5.3)
       rails-assets-leaflet (>= 1.3.1)
 
 GEM