fix: package.json to reduce vulnerabilities

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-OCTOKITREQUEST-8730853
- https://snyk.io/vuln/SNYK-JS-OCTOKITREQUESTERROR-8730854
- https://snyk.io/vuln/SNYK-JS-INFLIGHT-6095116
- https://snyk.io/vuln/SNYK-JS-MINIMATCH-3050818

package.json

@@ -41,15 +41,15 @@
 		"eslint-plugin-vue": "^6.0.1",
 		"husky": "^4.0.10",
 		"jest": "^24.9.0",
-		"lerna": "^3.18.0",
+		"lerna": "^6.5.0",
 		"lint-staged": "^9.0.2",
 		"node-sass": "^4.13.0",
 		"prettier": "^1.17.0",
 		"rollup": "^1.27.8",
 		"rollup-plugin-alias": "^2.0.0",
 		"rollup-plugin-buble": "^0.19.6",
 		"rollup-plugin-commonjs": "^10.0.0",
-		"rollup-plugin-delete": "^1.1.0",
+		"rollup-plugin-delete": "^3.0.0",
 		"rollup-plugin-filesize": "^6.1.0",
 		"rollup-plugin-node-resolve": "^5.0.2",
 		"rollup-plugin-terser": "^5.1.3",