Update dependency grunt to v1.1.0 (https://github.com/woocommerce/woocommerce-admin/pull/3921)

Co-authored-by: Renovate Bot <bot@renovateapp.com>

plugins/woocommerce-admin/package-lock.json

@@ -14219,9 +14219,9 @@
       "integrity": "sha1-8QdIy+dq+WS3yWyTxrzCivEgwIE="
     },
     "grunt": {
-      "version": "1.0.4",
-      "resolved": "https://registry.npmjs.org/grunt/-/grunt-1.0.4.tgz",
-      "integrity": "sha512-PYsMOrOC+MsdGEkFVwMaMyc6Ob7pKmq+deg1Sjr+vvMWp35sztfwKE7qoN51V+UEtHsyNuMcGdgMLFkBHvMxHQ==",
+      "version": "1.1.0",
+      "resolved": "https://registry.npmjs.org/grunt/-/grunt-1.1.0.tgz",
+      "integrity": "sha512-+NGod0grmviZ7Nzdi9am7vuRS/h76PcWDsV635mEXF0PEQMUV6Kb+OjTdsVxbi0PZmfQOjCMKb3w8CVZcqsn1g==",
       "dev": true,
       "requires": {
         "coffeescript": "~1.10.0",
@@ -14235,9 +14235,9 @@
         "grunt-legacy-log": "~2.0.0",
         "grunt-legacy-util": "~1.1.1",
         "iconv-lite": "~0.4.13",
-        "js-yaml": "~3.13.0",
+        "js-yaml": "~3.13.1",
         "minimatch": "~3.0.2",
-        "mkdirp": "~0.5.1",
+        "mkdirp": "~1.0.3",
         "nopt": "~3.0.6",
         "path-is-absolute": "~1.0.0",
         "rimraf": "~2.6.2"
@@ -14293,6 +14293,12 @@
             "resolve": "~1.1.0"
           }
         },
+        "mkdirp": {
+          "version": "1.0.3",
+          "resolved": "https://registry.npmjs.org/mkdirp/-/mkdirp-1.0.3.tgz",
+          "integrity": "sha512-6uCP4Qc0sWsgMLy1EOqqS/3rjDHOEnsStVr/4vtAIK2Y5i2kA7lFFejYrpIyiN9w0pYf4ckeCYT9f1r1P9KX5g==",
+          "dev": true
+        },
         "resolve": {
           "version": "1.1.7",
           "resolved": "https://registry.npmjs.org/resolve/-/resolve-1.1.7.tgz",

plugins/woocommerce-admin/package.json

@@ -183,7 +183,7 @@
 		"eslint-plugin-react": "7.19.0",
 		"eslint-plugin-wpcalypso": "4.1.0",
 		"fs-extra": "8.1.0",
-		"grunt": "1.0.4",
+		"grunt": "1.1.0",
 		"grunt-checktextdomain": "1.0.1",
 		"grunt-wp-i18n": "1.0.3",
 		"husky": "4.2.3",