Bump debug and grunt-contrib-watch

Bumps [debug](https://github.com/debug-js/debug) to 3.2.6 and updates ancestor dependency [grunt-contrib-watch](https://github.com/gruntjs/grunt-contrib-watch). These dependencies need to be updated together.


Updates `debug` from 2.2.0 to 3.2.6
- [Release notes](https://github.com/debug-js/debug/releases)
- [Commits](https://github.com/debug-js/debug/compare/2.2.0...3.2.6)

Updates `grunt-contrib-watch` from 1.0.0 to 1.1.0
- [Release notes](https://github.com/gruntjs/grunt-contrib-watch/releases)
- [Changelog](https://github.com/gruntjs/grunt-contrib-watch/blob/main/CHANGELOG)
- [Commits](https://github.com/gruntjs/grunt-contrib-watch/compare/v1.0.0...v1.1.0)

---
updated-dependencies:
- dependency-name: debug
  dependency-type: indirect
- dependency-name: grunt-contrib-watch
  dependency-type: direct:development
...

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

package.json

@@ -148,7 +148,7 @@
     "grunt-contrib-jasmine": "CartoDB/grunt-contrib-jasmine#headless-chrome",
     "grunt-contrib-jst": "CartoDB/grunt-contrib-jst#merge-master",
     "grunt-contrib-uglify": "2.0.x",
-    "grunt-contrib-watch": "1.0.0",
+    "grunt-contrib-watch": "1.1.0",
     "grunt-eslint": "~20.1.0",
     "grunt-exorcise": "2.1.1",
     "grunt-postcss": "0.7.2",