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

 grunt                 1.0.1  →  1.0.2
 grunt-banana-checker  0.4.0  →  0.6.0
 grunt-jsonlint        1.0.7  →  1.1.0

Change-Id: I7f39c3862241041883a129d568f1228df570aaee

wikimedia/mediawiki-extensions-SandboxLink,wikimedia/mediawiki-extensions-SandboxLink