fix: packages/client/package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-VUE-8219889
- https://snyk.io/vuln/SNYK-JS-VUECOMPILERSFC-8219886

packages/client/package.json

@@ -38,7 +38,7 @@
     "register-service-worker": "^1.7.1",
     "swiper": "^5.3.6",
     "vee-validate": "^2.2.8",
-    "vue": "^2.6.11",
+    "vue": "^3.0.0",
     "vue-acl": "4.1.10",
     "vue-apexcharts": "^1.5.2",
     "vue-awesome-swiper": "^4.0.2",
@@ -59,7 +59,7 @@
     "vue-quill-editor": "^3.0.6",
     "vue-router": "^3.1.6",
     "vue-select": "^3.9.4",
-    "vue-simple-calendar": "^4.3.2",
+    "vue-simple-calendar": "^6.0.0",
     "vue-simple-suggest": "^1.10.1",
     "vue-star-rating": "^1.6.1",
     "vue-toasted": "^1.1.28",