Update grunt dependencies to the last posible version
Created by: dionisioC
With npm (6.4.1) whe doing npm install we got the following message
found 94 vulnerabilities (48 low, 8 moderate, 33 high, 5 critical)
Some of them are hard to remove as they require some code changes, but others are quite easy to remove as it is just a version change.
Updating some grunt dependencies we have
found 49 vulnerabilities (25 low, 5 moderate, 15 high, 4 critical)
Without any code change (npm install is correct, tests and sample is working)