build: Bump linting devDependencies to latest
build: Bump linting devDependencies to latest

 eslint-config-wikimedia     0.5.0   -   0.7.2
 grunt                       1.0.1   -   1.0.3
 grunt-contrib-watch         1.0.0   -   1.1.0
 grunt-eslint               20.1.0   -  21.0.0
 grunt-stylelint             0.9.0   -  0.10.0
 stylelint                   8.2.0   -   9.2.0
 stylelint-config-wikimedia  0.4.2   -   0.4.3

Change-Id: I4e33369d1e37be6adc93e26098aad122809fa424

wikimedia/mediawiki-extensions-Kartographer,wikimedia/mediawiki-extensions-Kartographer,wikimedia/mediawiki-extensions-Kartographer