Bump chart.js from 2.9.4 to 3.4.1 in /app

Bumps [chart.js](https://github.com/chartjs/Chart.js) from 2.9.4 to 3.4.1.
- [Release notes](https://github.com/chartjs/Chart.js/releases)
- [Commits](chartjs/Chart.js@v2.9.4...v3.4.1)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Author: dependabot-preview[bot]

app/package-lock.json

@@ -24,7 +24,7 @@
     "@angular/platform-browser-dynamic": "^10.0.14",
     "@angular/router": "^10.0.14",
     "@types/moment": "^2.13.0",
-    "chart.js": "^2.9.4",
+    "chart.js": "^3.4.1",
     "core-js": "^3.15.2",
     "hash.js": "^1.1.7",
     "moment": "^2.29.1",