fix: upgrade minimatch from 0.3.0 to 0.4.0

Snyk has created this PR to upgrade minimatch from 0.3.0 to 0.4.0.

See this package in NPM:
https://www.npmjs.com/package/minimatch

See this project in Snyk:
https://app.snyk.io/org/podio-podio/project/fa5ad017-b4e5-4d96-8254-69ca7dabb75b?utm_source=github&utm_medium=upgrade-pr

package.json

@@ -21,7 +21,7 @@
   "dependencies": {
     "istanbul": "~0.3.0",
     "dateformat": "~1.0.6",
-    "minimatch": "~0.3.0"
+    "minimatch": "~0.4.0"
   },
   "peerDependencies": {
     "karma": ">=0.9"