Merge pull request #304 from textpattern/dependabot/npm_and_yarn/grunt-1.3.0

Bump grunt from 1.2.1 to 1.3.0

Author: philwareham

package.json

@@ -12,7 +12,7 @@
   "devDependencies": {
     "autoprefixer": "9.8.6",
     "cssnano": "4.1.10",
-    "grunt": "1.2.1",
+    "grunt": "1.3.0",
     "grunt-cli": "1.3.2",
     "grunt-concurrent": "3.0.0",
     "grunt-contrib-clean": "2.0.0",