chore(deps): update dependency @types/prop-types to v15.7.3

Author: renovate-bot

package-lock.json

@@ -118,7 +118,7 @@
 		"@types/graphql": "14.2.2",
 		"@types/jest": "24.0.15",
 		"@types/node": "7.10.6",
-		"@types/prop-types": "15.7.1",
+		"@types/prop-types": "15.7.3",
 		"@types/react": "16.8.20",
 		"@types/react-transition-group": "2.9.2",
 		"autoprefixer": "9.8.0",