fix(package): update @angular/material to version 6.1.0

Author: greenkeeper[bot]

package.json

@@ -36,7 +36,7 @@
     "@angular/cdk": "6.0.2",
     "@angular/common": "6.0.2",
     "@angular/core": "6.0.2",
-    "@angular/material": "6.0.2"
+    "@angular/material": "6.1.0"
   },
   "devDependencies": {
     "@angular-devkit/schematics": "^0.6.1",