build(deps): bump material-design-icons-iconfont from 6.1.0 to 6.7.0

Bumps [material-design-icons-iconfont](https://github.com/jossef/material-design-icons-iconfont) from 6.1.0 to 6.7.0.
- [Release notes](https://github.com/jossef/material-design-icons-iconfont/releases)
- [Commits](jossef/material-design-icons-iconfont@v6.1.0...v6.7.0)

---
updated-dependencies:
- dependency-name: material-design-icons-iconfont
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

package.json

@@ -75,7 +75,7 @@
     "hammerjs": "^2.0.8",
     "immutable": "^4.0.0-rc.14",
     "lodash-es": "^4.17.21",
-    "material-design-icons-iconfont": "^6.1.0",
+    "material-design-icons-iconfont": "^6.7.0",
     "ng-circle-progress": "^1.6.0",
     "ngx-joyride": "^2.5.0",
     "ngx-long-press2": "^2.0.0",