fix: package.json 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-MARKDOWNTOJSX-6258886
- https://snyk.io/vuln/SNYK-JS-JSON5-3182856
- https://snyk.io/vuln/SNYK-JS-VUE-8219889

package.json

@@ -20,14 +20,14 @@
 	},
 	"dependencies": {
 		"@babel/core": "^7.8.3",
-		"@storybook/addon-knobs": "5.3.21",
-		"@storybook/vue": "5.3.21",
+		"@storybook/addon-knobs": "7.0.0",
+		"@storybook/vue": "7.6.17",
 		"@tournant/communard": "^2.2.0",
 		"@vue/babel-preset-app": "^4.1.2",
 		"@vue/cli-plugin-babel": "^4.1.2",
 		"@vue/cli-plugin-eslint": "^4.1.2",
 		"@vue/cli-plugin-unit-jest": "^4.1.2",
-		"@vue/cli-service": "^4.1.2",
+		"@vue/cli-service": "^5.0.1",
 		"@vue/eslint-config-standard": "^5.1.0",
 		"@vue/test-utils": "1.0.0-beta.29",
 		"babel-eslint": "^10.0.1",
@@ -55,7 +55,7 @@
 		"rollup-plugin-terser": "^5.1.3",
 		"rollup-plugin-vue": "^5.1.4",
 		"sass-loader": "^8.0.0",
-		"vue": "^2.6.10",
+		"vue": "^3.0.0",
 		"vue-jest": "4.0.0-beta.2",
 		"vue-template-compiler": "^2.6.10",
 		"vuelidate": "^0.7.5"