update jquery to 3.5.1 to resolve 3 vulnerabilities

package.json

@@ -2,8 +2,8 @@
   "name": "textgridrep-portal",
   "version": "3.0.0",
   "dependencies": {
-    "jquery": "^1.11.2",
-    "openseadragon": "^2.4.1",
-    "font-awesome": "4.3.0"
+    "font-awesome": "4.3.0",
+    "jquery": "^3.5.1",
+    "openseadragon": "^2.4.1"
   }
 }