Bump chart.js from 2.7.2 to 2.9.4

Bumps [chart.js](https://github.com/chartjs/Chart.js) from 2.7.2 to 2.9.4.
- [Release notes](https://github.com/chartjs/Chart.js/releases)
- [Commits](chartjs/Chart.js@v2.7.2...v2.9.4)

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

Author: dependabot[bot]

package.json

@@ -34,7 +34,7 @@
     "babel-preset-stage-0": "^6.24.1",
     "bcrypt-nodejs": "^0.0.3",
     "bootstrap": "^4.1.1",
-    "chart.js": "^2.7.2",
+    "chart.js": "^2.9.4",
     "classnames": "^2.2.5",
     "core-js": "^2.5.6",
     "enzyme": "^3.3.0",

yarn.lock

@@ -2035,9 +2035,9 @@ chardet@^0.4.0:
   version "0.4.2"
   resolved "https://registry.yarnpkg.com/chardet/-/chardet-0.4.2.tgz#b5473b33dc97c424e5d98dc87d55d4d8a29c8bf2"
 
-chart.js@^2.7.2:
-  version "2.7.2"
-  resolved "https://registry.yarnpkg.com/chart.js/-/chart.js-2.7.2.tgz#3c9fde4dc5b95608211bdefeda7e5d33dffa5714"
+chart.js@^2.9.4:
+  version "2.9.4"
+  resolved "https://registry.yarnpkg.com/chart.js/-/chart.js-2.9.4.tgz#0827f9563faffb2dc5c06562f8eb10337d5b9684"
   dependencies:
     chartjs-color "^2.1.0"
     moment "^2.10.2"
@@ -6537,11 +6537,7 @@ mocha@^4.0.1:
     mkdirp "0.5.1"
     supports-color "4.4.0"
 
-moment@2.x, moment@^2.19.3:
-  version "2.19.4"
-  resolved "https://registry.yarnpkg.com/moment/-/moment-2.19.4.tgz#17e5e2c6ead8819c8ecfad83a0acccb312e94682"
-
-moment@^2.10.2:
+moment@2.x, moment@^2.10.2, moment@^2.19.3:
   version "2.22.2"
   resolved "https://registry.yarnpkg.com/moment/-/moment-2.22.2.tgz#3c257f9839fc0e93ff53149632239eb90783ff66"