Update ssri npm package bc of vulnerability

package-lock.json

@@ -1453,7 +1453,7 @@
         "move-concurrently": "1.0.1",
         "promise-inflight": "1.0.1",
         "rimraf": "2.6.2",
-        "ssri": "5.0.0",
+        "ssri": "5.2.4",
         "unique-filename": "1.1.0",
         "y18n": "3.2.1"
       }
@@ -11105,9 +11105,9 @@
       }
     },
     "ssri": {
-      "version": "5.0.0",
-      "resolved": "https://registry.npmjs.org/ssri/-/ssri-5.0.0.tgz",
-      "integrity": "sha512-728D4yoQcQm1ooZvSbywLkV1RjfITZXh0oWrhM/lnsx3nAHx7LsRGJWB/YyvoceAYRq98xqbstiN4JBv1/wNHg==",
+      "version": "5.2.4",
+      "resolved": "https://registry.npmjs.org/ssri/-/ssri-5.2.4.tgz",
+      "integrity": "sha512-UnEAgMZa15973iH7cUi0AHjJn1ACDIkaMyZILoqwN6yzt+4P81I8tBc5Hl+qwi5auMplZtPQsHrPBR5vJLcQtQ==",
       "requires": {
         "safe-buffer": "5.1.1"
       }

package.json

@@ -29,8 +29,9 @@
     "moment": "^2.21.0",
     "pjax": "^0.2.5",
     "popper.js": "^1.14.0",
-    "rivets": "0.9.6",
+    "rivets": "^0.9.6",
     "select2": "^4.0.5",
+    "ssri": "^5.2.2",
     "webpack": "^3.0",
     "x-editable": "1.5.1"
   },