Bump version of angular packages

Author: André Coelho

package.json

@@ -22,12 +22,12 @@
   },
   "homepage": "https://github.com/seegno/angular-oauth2",
   "dependencies": {
-    "angular": "^1.4.0",
-    "angular-cookies": "^1.4.0",
+    "angular": "1.5.9",
+    "angular-cookies": "1.5.9",
     "query-string": "^1.0.0"
   },
   "devDependencies": {
-    "angular-mocks": "^1.3.9",
+    "angular-mocks": "1.5.9",
     "github-changes": "^1.0.0",
     "gulp": "^3.8.10",
     "gulp-babel": "^5.3.0",