chore: dependencies update

- chore: update `@coreui/coreui` to `2.0.20`
- chore: update `chart.js` to `2.7.3`
- chore: update `@vue/cli-plugin-babel` to `3.0.5`
- chore: update `@vue/cli-plugin-e2e-nightwatch` to `3.0.5`
- chore: update `@vue/cli-plugin-eslint` to `3.0.5`
- chore: update `@vue/cli-plugin-unit-jest` to `3.0.5`
- chore: update `@vue/cli-service` to `3.0.5`
- chore: update `node-sass` to `4.9.4`

Author: xidedix

package.json

@@ -14,13 +14,13 @@
     "test:e2e": "vue-cli-service test:e2e"
   },
   "dependencies": {
-    "@coreui/coreui": "^2.0.14",
+    "@coreui/coreui": "^2.0.20",
     "@coreui/coreui-plugin-chartjs-custom-tooltips": "^1.2.0",
     "@coreui/icons": "0.3.0",
     "@coreui/vue": "^2.0.2",
     "bootstrap": "^4.1.3",
     "bootstrap-vue": "^2.0.0-rc.11",
-    "chart.js": "^2.7.2",
+    "chart.js": "^2.7.3",
     "core-js": "^2.5.7",
     "css-vars-ponyfill": "^1.11.1",
     "flag-icon-css": "^3.2.0",
@@ -33,17 +33,17 @@
     "vue-router": "^3.0.1"
   },
   "devDependencies": {
-    "@vue/cli-plugin-babel": "^3.0.4",
-    "@vue/cli-plugin-e2e-nightwatch": "^3.0.4",
-    "@vue/cli-plugin-eslint": "^3.0.4",
-    "@vue/cli-plugin-unit-jest": "^3.0.4",
-    "@vue/cli-service": "^3.0.4",
+    "@vue/cli-plugin-babel": "^3.0.5",
+    "@vue/cli-plugin-e2e-nightwatch": "^3.0.5",
+    "@vue/cli-plugin-eslint": "^3.0.5",
+    "@vue/cli-plugin-unit-jest": "^3.0.5",
+    "@vue/cli-service": "^3.0.5",
     "@vue/test-utils": "^1.0.0-beta.25",
     "babel-core": "^7.0.0-bridge.0",
     "babel-jest": "^23.6.0",
     "growl": "^1.10.5",
     "https-proxy-agent": "^2.2.1",
-    "node-sass": "^4.9.3",
+    "node-sass": "^4.9.4",
     "sass-loader": "^7.1.0",
     "vue-template-compiler": "^2.5.17"
   },