Bump grunt from 1.5.2 to 1.5.3

Bumps [grunt](https://github.com/gruntjs/grunt) from 1.5.2 to 1.5.3.
- [Release notes](https://github.com/gruntjs/grunt/releases)
- [Changelog](https://github.com/gruntjs/grunt/blob/main/CHANGELOG)
- [Commits](gruntjs/grunt@v1.5.2...v1.5.3)

---
updated-dependencies:
- dependency-name: grunt
  dependency-type: direct:development
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

package.json

@@ -6,7 +6,7 @@
     "underscore": "1.10.2"
   },
   "devDependencies": {
-    "grunt": "^1.5.2",
+    "grunt": "^1.5.3",
     "grunt-cli": "^1.3.2",
     "grunt-contrib-concat": "1.0.1",
     "grunt-contrib-jshint": "^2.1.0",

yarn.lock

@@ -691,10 +691,10 @@ [email protected]:
     marked "~0.2.10"
     toc "~0.3.0"
 
-grunt@^1.5.2:
-  version "1.5.2"
-  resolved "https://registry.yarnpkg.com/grunt/-/grunt-1.5.2.tgz#46b014e28d17c85baac19d5e891bb3f04923c098"
-  integrity sha512-XCtfaIu72OyDqK24MjWiGC9SwlkuhkS1mrULr1xzuJ2XqAFhP3ZAchZGHJeSCY6mkaOXU4F7SbmmCF7xIVoC9w==
+grunt@^1.5.3:
+  version "1.5.3"
+  resolved "https://registry.yarnpkg.com/grunt/-/grunt-1.5.3.tgz#3214101d11257b7e83cf2b38ea173b824deab76a"
+  integrity sha512-mKwmo4X2d8/4c/BmcOETHek675uOqw0RuA/zy12jaspWqvTp4+ZeQF1W+OTpcbncnaBsfbQJ6l0l4j+Sn/GmaQ==
   dependencies:
     dateformat "~3.0.3"
     eventemitter2 "~0.4.13"