Update material-ui dependency

[stephsalazar]

Currently used:

• "@material-ui/core": "^3.2.2"
• "@material-ui/icons": "^3.0.2"
• "@material-ui/styles": "^4.1.0"

Currently used in the products:

• Placement : "@material-ui/core": "3.2.2"
• Aprende y LMS : "@material-ui/core": "3.9.2"
• Admisión: "@material-ui/core": "4.8"

@raulingg @MaiaRojas @MeryCardenas23 @arku @lizzie136 @stephsalazar