fix npm install github security error (#4048)

fixes the client issue due to

https://github.blog/2021-09-01-improving-git-protocol-security-github/

created a fork of gridster and dropping old jquery dependency there

package.json

@@ -66,7 +66,6 @@
     "file-loader": "1.1.11",
     "gettext.js": "0.9.0",
     "git-rev-sync": "1.10.0",
-    "gridster": "0.5.6",
     "grunt": "1.0.2",
     "grunt-angular-gettext": "2.5.3",
     "grunt-angular-templates": "1.1.0",
@@ -81,7 +80,7 @@
     "jquery": "3.3.1",
     "jquery-jcrop": "0.9.13",
     "jquery-ui": "github:components/jqueryui#1.11.4",
-    "jquery.gridster": "github:dustmoo/gridster.js#c306335397816beceb74e4a176067baef34a0359",
+    "gridster": "github:superdesk/gridster.js#885d0c9",
     "json-loader": "~0.5.4",
     "json-merge-patch": "0.2.3",
     "json5": "0.5.1",