minor symfony#1028 Updated JavaScript dependencies (javiereguiluz)

This PR was squashed before being merged into the master branch (closes symfony#1028).

Discussion
----------

Updated JavaScript dependencies

This is needed to fix a security vulnerability:

![image](https://user-images.githubusercontent.com/73419/65025378-e2eaa280-d936-11e9-804a-aca9f3ba6cc4.png)

Commits
-------

7477b79 Updated JavaScript dependencies

Author: javiereguiluz

package.json

@@ -1,7 +1,7 @@
 {
   "devDependencies": {
     "@fortawesome/fontawesome-free": "^5.8.1",
-    "@symfony/webpack-encore": "^0.26.0",
+    "@symfony/webpack-encore": "^0.28.0",
     "bloodhound-js": "^1.2.3",
     "bootstrap-sass": "^3.3.7",
     "bootstrap-tagsinput": "^0.7.1",

public/build/0.js

@@ -39,15 +39,15 @@
     }
   },
   "integrity": {
-    "/build/runtime.js": "sha384-5WSgDNxkAY6j6/bzAcp3v//+PCXLgXCU3u5QgRXWiRfMnN4Ic/a/EF6HJnbRXik8",
-    "/build/0.js": "sha384-jDIhKUnvFIslPqAgXgRKPtCGahSHPauPtdEjjHQ4sZRIXz01QgRddKg44c9tOVcQ",
-    "/build/1.js": "sha384-218Po/nLHQljJlGMju/WIPaBbprLrYg6uyyARYbkybHLTUQGZDCCuGSB2wmRELEW",
-    "/build/app.js": "sha384-XhAG/I1VVL0admGT0ZEDTYdabB0STMzZsYPkZ6mrmQhDUCe66ldCHnwTTWX069rz",
-    "/build/app.css": "sha384-mSGbxUu/Q9Hbd/Gu2rYyk0Y8uUFWfPa8N0zP1E1f0E7lvWbQ//00E6k3v84Mm0Hw",
-    "/build/login.js": "sha384-AnahE1JksyOZbxe/Gdg1twmMPucW4F1llK9OftiRo/Ud2L1ShQPtBLuN4MoCLb0f",
-    "/build/2.js": "sha384-35yx4m4fx1SoFdyvzGO0FqsakDLnulOzdlePL4weeYAcN14ldjFk+csCLqGig08d",
-    "/build/admin.js": "sha384-JmniyJIvI0RiH0zMq2m2D7Q/6gKy5d3UKXu62YetvnV5MdxfbJWhWeNBB2umxtwE",
-    "/build/admin.css": "sha384-ilLLAgcQxfeIVl6jV3AsZ2jmrWwgECQptl9HYwqc2NpYuTl6FEW46DBpDk5Q76sp",
-    "/build/search.js": "sha384-JszEQKXXaNJvTHGGLCrf1OLfn37YYH0LKq2SNZg3D97Qs1LRXd8YRqaNuEwjACqQ"
+    "/build/runtime.js": "sha384-/Zh0hTCgqMfXwZfeMIiueZzsKiHkvtqEOzKpZAuznIbgqg1DQpUQAwwNlO/9ToVH",
+    "/build/0.js": "sha384-Dt6rncfcL40e91sPDLy/fZ8XgfH6ZZmLY1+ajXaPmGFGTb5XNtWS5jmf84NoZT/f",
+    "/build/1.js": "sha384-bmKW9QGT6CjdvJr6hoYLCByhKzyjU+g+gUJ5SGOSxqUm4jzLuBhDpl0hImY/1R3M",
+    "/build/app.js": "sha384-/3gf9IHx1zzgGuRgdnnW/2AJBU896jAJn1dDLJLb3vBkLQkE8WvI3ycZt0l0GECV",
+    "/build/app.css": "sha384-NGTdnyfcvVpvCvvEryRps/xU6Mb67YeTf1pvFrUkd80uXKIuxzYmcXzvzttKu4d0",
+    "/build/login.js": "sha384-tCP53hf/3uu7W5h5syxKODJjjos7AyGM/lENitUwFKSXMxQsWP+50V0mN6bcImAo",
+    "/build/2.js": "sha384-zrtPryvCde+sRepOgkuLELopii2NoIgS3rrkpCfY8e7nT359Sc0tXRG2QqsKLfEO",
+    "/build/admin.js": "sha384-My30UK7GowsN0RikK0XGQk7gvdtxxZsz2f52md+YoV4YZu4yjMArjwO7ZwE7K4av",
+    "/build/admin.css": "sha384-NMnc2b6jJOZO4QiUk4TgitF+ipl41B2+0TFmAwGqpQ6cinY6Q6mb1watPtAAWkAZ",
+    "/build/search.js": "sha384-R/BW5h0YHjTYt/CVNZNOPDSuk0IQsvSSQZeP9hPpBtEkI4pBWMkBX4CAQnQQkFvt"
   }
 }