Update module with severity vulnerabilities
diff --git a/package-lock.json b/package-lock.json
index 0adfd94..f150028 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -98,6 +98,14 @@
       "dev": true,
       "requires": {
         "sprintf-js": "~1.0.2"
+      },
+      "dependencies": {
+        "sprintf-js": {
+          "version": "1.0.3",
+          "resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.0.3.tgz",
+          "integrity": "sha1-BOaSb2YolTVPPdAVIDYzuFcpfiw=",
+          "dev": true
+        }
       }
     },
     "array-find-index": {
@@ -1026,9 +1034,9 @@
       "dev": true
     },
     "grunt": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/grunt/-/grunt-1.0.3.tgz",
-      "integrity": "sha512-/JzmZNPfKorlCrrmxWqQO4JVodO+DVd5XX4DkocL/1WlLlKVLE9+SdEIempOAxDhWPysLle6afvn/hg7Ck2k9g==",
+      "version": "1.0.4",
+      "resolved": "https://registry.npmjs.org/grunt/-/grunt-1.0.4.tgz",
+      "integrity": "sha512-PYsMOrOC+MsdGEkFVwMaMyc6Ob7pKmq+deg1Sjr+vvMWp35sztfwKE7qoN51V+UEtHsyNuMcGdgMLFkBHvMxHQ==",
       "dev": true,
       "requires": {
         "coffeescript": "~1.10.0",
@@ -1042,7 +1050,7 @@
         "grunt-legacy-log": "~2.0.0",
         "grunt-legacy-util": "~1.1.1",
         "iconv-lite": "~0.4.13",
-        "js-yaml": "~3.5.2",
+        "js-yaml": "~3.13.0",
         "minimatch": "~3.0.2",
         "mkdirp": "~0.5.1",
         "nopt": "~3.0.6",
@@ -1050,12 +1058,6 @@
         "rimraf": "~2.6.2"
       },
       "dependencies": {
-        "esprima": {
-          "version": "2.7.3",
-          "resolved": "https://registry.npmjs.org/esprima/-/esprima-2.7.3.tgz",
-          "integrity": "sha1-luO3DVd59q1JzQMmc9HDEnZ7pYE=",
-          "dev": true
-        },
         "glob": {
           "version": "7.0.6",
           "resolved": "https://registry.npmjs.org/glob/-/glob-7.0.6.tgz",
@@ -1082,16 +1084,6 @@
             "resolve": "~1.1.0"
           }
         },
-        "js-yaml": {
-          "version": "3.5.5",
-          "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.5.5.tgz",
-          "integrity": "sha1-A3fDgBfKvHMisNH7zSWkkWQfL74=",
-          "dev": true,
-          "requires": {
-            "argparse": "^1.0.2",
-            "esprima": "^2.6.0"
-          }
-        },
         "resolve": {
           "version": "1.1.7",
           "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.1.7.tgz",
@@ -1447,9 +1439,9 @@
       "dev": true
     },
     "js-yaml": {
-      "version": "3.12.1",
-      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.12.1.tgz",
-      "integrity": "sha512-um46hB9wNOKlwkHgiuyEVAybXBjwFUV0Z/RaHJblRd9DXltue9FTYvzCr9ErQrK9Adz5MU4gHWVaNUfdmrC8qA==",
+      "version": "3.13.0",
+      "resolved": "https://registry.npmjs.org/js-yaml/-/js-yaml-3.13.0.tgz",
+      "integrity": "sha512-pZZoSxcCYco+DIKBTimr67J6Hy+EYGZDY/HCWC+iAEA9h1ByhMXAIVUXMcMFpOCxQ/xjXmPI2MkDL5HRm5eFrQ==",
       "dev": true,
       "requires": {
         "argparse": "^1.0.7",
@@ -2477,9 +2469,9 @@
       "dev": true
     },
     "sprintf-js": {
-      "version": "1.0.3",
-      "resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.0.3.tgz",
-      "integrity": "sha1-BOaSb2YolTVPPdAVIDYzuFcpfiw=",
+      "version": "1.1.2",
+      "resolved": "https://registry.npmjs.org/sprintf-js/-/sprintf-js-1.1.2.tgz",
+      "integrity": "sha512-VE0SOVEHCk7Qc8ulkWw3ntAzXuqf7S2lvwQaDLRnUeIEaKNQJzV6BwmLKhOqT61aGhfUMrXeaBk+oDGCzvhcug==",
       "dev": true
     },
     "sshpk": {
diff --git a/package.json b/package.json
index 2455ce6..f56db65 100644
--- a/package.json
+++ b/package.json
@@ -32,7 +32,7 @@
     "eslint": "^5.12.0",
     "eslint-config-airbnb-base": "^13.1.0",
     "eslint-plugin-import": "^2.14.0",
-    "grunt": "^1.0.3",
+    "grunt": "^1.0.4",
     "grunt-license-report": "^0.0.8",
     "node-addon-api": "^1.6.2",
     "node-gyp": "^3.8.0"