chore: dependencies update

- update `@coreui/coreui` to `^2.1.12`
- update `@coreui/coreui-plugin-chartjs-custom-tooltips` to `^1.3.1`
- update `bootstrap-vue` to `^2.0.0-rc.24`
- update `chart.js` to `^2.8.0`
- update `core-js` to `^2.6.9`
- update `css-vars-ponyfill` to `^2.0.2`
- update `flag-icon-css` to `^3.3.0`
- update `vue` to `^2.6.10`
- update `vue-chartjs` to `^3.4.2`
- update `vue-router` to `^3.0.6"
- update `@vue/cli-plugin-babel` to `^3.8.0`
- update `@vue/cli-plugin-e2e-nightwatch` to `^3.8.0`
- update `@vue/cli-plugin-eslint` to `^3.8.0`
- update `@vue/cli-plugin-unit-jest` to `^3.8.0`
- update `@vue/cli-service` to `^3.8.4`
- update `@vue/test-utils` to `1.0.0-beta.29`
- update `node-sass` to `^4.12.0`
- update `vue-template-compiler` to `^2.6.10`

Author: xidedix

package.json

@@ -14,38 +14,38 @@
     "test:e2e": "vue-cli-service test:e2e"
   },
   "dependencies": {
-    "@coreui/coreui": "^2.1.6",
-    "@coreui/coreui-plugin-chartjs-custom-tooltips": "^1.2.0",
+    "@coreui/coreui": "^2.1.12",
+    "@coreui/coreui-plugin-chartjs-custom-tooltips": "^1.3.1",
     "@coreui/icons": "0.3.0",
     "@coreui/vue": "^2.1.2",
     "bootstrap": "^4.2.1",
-    "bootstrap-vue": "^2.0.0-rc.11",
-    "chart.js": "^2.7.3",
-    "core-js": "^2.6.2",
-    "css-vars-ponyfill": "^1.16.2",
-    "flag-icon-css": "^3.2.0",
+    "bootstrap-vue": "^2.0.0-rc.24",
+    "chart.js": "^2.8.0",
+    "core-js": "^2.6.9",
+    "css-vars-ponyfill": "^2.0.2",
+    "flag-icon-css": "^3.3.0",
     "font-awesome": "^4.7.0",
     "perfect-scrollbar": "^1.4.0",
     "simple-line-icons": "^2.4.1",
-    "vue": "^2.5.22",
-    "vue-chartjs": "^3.4.0",
+    "vue": "^2.6.10",
+    "vue-chartjs": "^3.4.2",
     "vue-perfect-scrollbar": "^0.1.0",
-    "vue-router": "^3.0.2"
+    "vue-router": "^3.0.6"
   },
   "devDependencies": {
-    "@vue/cli-plugin-babel": "^3.3.0",
-    "@vue/cli-plugin-e2e-nightwatch": "^3.3.0",
-    "@vue/cli-plugin-eslint": "^3.3.0",
-    "@vue/cli-plugin-unit-jest": "^3.3.0",
-    "@vue/cli-service": "^3.3.0",
-    "@vue/test-utils": "^1.0.0-beta.28",
+    "@vue/cli-plugin-babel": "^3.8.0",
+    "@vue/cli-plugin-e2e-nightwatch": "^3.8.0",
+    "@vue/cli-plugin-eslint": "^3.8.0",
+    "@vue/cli-plugin-unit-jest": "^3.8.0",
+    "@vue/cli-service": "^3.8.4",
+    "@vue/test-utils": "1.0.0-beta.29",
     "babel-core": "^7.0.0-bridge.0",
     "babel-jest": "^23.6.0",
     "growl": "^1.10.5",
     "https-proxy-agent": "^2.2.1",
-    "node-sass": "^4.11.0",
+    "node-sass": "^4.12.0",
     "sass-loader": "^7.1.0",
-    "vue-template-compiler": "^2.5.22"
+    "vue-template-compiler": "^2.6.10"
   },
   "browserslist": [
     "> 1%",