chore(core): add missing sortable frontend dep

Author: DavideIadeluca

framework/core/js/package.json

@@ -17,6 +17,7 @@
         "mithril": "^2.2",
         "nanoid": "^3.1.30",
         "punycode": "^2.1.1",
+        "sortablejs": "^1.15.6",
         "textarea-caret": "^3.1.0",
         "throttle-debounce": "^3.0.1"
     },

yarn.lock

@@ -4969,6 +4969,11 @@ sortablejs@^1.14.0:
   resolved "https://registry.yarnpkg.com/sortablejs/-/sortablejs-1.15.3.tgz#033668db5ebfb11167d1249ab88e748f27959e29"
   integrity sha512-zdK3/kwwAK1cJgy1rwl1YtNTbRmc8qW/+vgXf75A7NHag5of4pyI6uK86ktmQETyWRH7IGaE73uZOOBcGxgqZg==
 
+sortablejs@^1.15.6:
+  version "1.15.6"
+  resolved "https://registry.yarnpkg.com/sortablejs/-/sortablejs-1.15.6.tgz#ff93699493f5b8ab8d828f933227b4988df1d393"
+  integrity sha512-aNfiuwMEpfBM/CN6LY0ibyhxPfPbyFeBTYJKCvzkJ2GkUpazIt3H+QIPAMHwqQ7tMKaHz1Qj+rJJCqljnf4p3A==
+
 source-map-support@0.5.13:
   version "0.5.13"
   resolved "https://registry.yarnpkg.com/source-map-support/-/source-map-support-0.5.13.tgz#31b24a9c2e73c2de85066c0feb7d44767ed52932"