Bump lodash from 4.17.5 to 4.17.13

Bumps [lodash](https://github.com/lodash/lodash) from 4.17.5 to 4.17.13.
- [Release notes](https://github.com/lodash/lodash/releases)
- [Commits](lodash/lodash@4.17.5...4.17.13)

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

package-lock.json

@@ -6,7 +6,7 @@
     "grunt-phpcs": "^0.4.0",
     "grunt-phplint": "0.0.8",
     "grunt-wp-readme-to-markdown": "^2.0.0",
-    "lodash": "4.17.5",
+    "lodash": "4.17.13",
     "minimatch": "3.0.2",
     "node-qunit-phantomjs": "^1.4.0"
   },