build(deps): bump chart.js from 2.8.0 to 2.9.4

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)

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

Author: dependabot[bot]

package.json

@@ -27,7 +27,7 @@
     "@coreui/coreui-plugin-chartjs-custom-tooltips": "^1.2.0",
     "angular2-toaster": "^7.0.0",
     "bootstrap": "^4.2.1",
-    "chart.js": "^2.7.3",
+    "chart.js": "^2.9.4",
     "core-js": "^2.5.4",
     "flag-icon-css": "^3.2.1",
     "font-awesome": "^4.7.0",

yarn.lock

@@ -1516,10 +1516,10 @@ chardet@^0.7.0:
   resolved "https://registry.yarnpkg.com/chardet/-/chardet-0.7.0.tgz#90094849f0937f2eedc2425d0d28a9e5f0cbad9e"
   integrity sha512-mT8iDcrh03qDGRRmoA2hmBJnxpllMR+0/0qlzjqZES6NdiWDcZkCNAk4rPFZ9Q85r27unkiNNg8ZOiwZXBHwcA==
 
-chart.js@^2.6.0, chart.js@^2.7.3:
-  version "2.8.0"
-  resolved "https://registry.yarnpkg.com/chart.js/-/chart.js-2.8.0.tgz#b703b10d0f4ec5079eaefdcd6ca32dc8f826e0e9"
-  integrity sha512-Di3wUL4BFvqI5FB5K26aQ+hvWh8wnP9A3DWGvXHVkO13D3DSnaSsdZx29cXlEsYKVkn1E2az+ZYFS4t0zi8x0w==
+chart.js@^2.6.0, chart.js@^2.9.4:
+  version "2.9.4"
+  resolved "https://registry.yarnpkg.com/chart.js/-/chart.js-2.9.4.tgz#0827f9563faffb2dc5c06562f8eb10337d5b9684"
+  integrity sha512-B07aAzxcrikjAPyV+01j7BmOpxtQETxTSlQ26BEYJ+3iUkbNKaOJ/nDbT6JjyqYxseM0ON12COHYdU2cTIjC7A==
   dependencies:
     chartjs-color "^2.1.0"
     moment "^2.10.2"