fix: package.json & yarn.lock to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-ELLIPTIC-8187303
- https://snyk.io/vuln/SNYK-JS-VUE-8219889

package.json

@@ -38,7 +38,7 @@
         "style-loader": "^0.21.0",
         "tabex": "^1.0.6",
         "uuid": "^3.3.2",
-        "vue": "^2.6.10",
+        "vue": "^3.0.0",
         "vue-chartjs": "^3.5.1",
         "vue-click-outside": "^1.0.7",
         "vue-drag-drop": "^1.1.4",
@@ -49,7 +49,7 @@
         "vuex-persistedstate": "^2.5.4",
         "vuex-shared-mutations": "^1.0.2",
         "webfonts-loader": "^5.1.1",
-        "webpack": "^4.8.1",
+        "webpack": "^5.0.0",
         "webpack-cli": "^3.3.10"
     },
     "scripts": {