Bump chart.js from 2.8.0 to 2.9.4 (#9)

Bumps [chart.js](https://github.com/chartjs/Chart.js) from 2.8.0 to 2.9.4.
- [Release notes](https://github.com/chartjs/Chart.js/releases)
- [Commits](chartjs/Chart.js@v2.8.0...v2.9.4)

---
updated-dependencies:
- dependency-name: chart.js
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Signed-off-by: dependabot[bot] <[email protected]>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

package-lock.json

@@ -38,7 +38,7 @@
     "axios": "^0.21.2",
     "bluebird": "latest",
     "brace": "latest",
-    "chart.js": "^2.8.0",
+    "chart.js": "^2.9.4",
     "js-cookie": "^3.0.1",
     "node-sass": "^4.12.0",
     "query-string": "^6.7.0",