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

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-FOLLOWREDIRECTS-2332181
- https://snyk.io/vuln/SNYK-JS-FOLLOWREDIRECTS-2396346
- https://snyk.io/vuln/SNYK-JS-UAPARSERJS-1023599
- https://snyk.io/vuln/SNYK-JS-UAPARSERJS-1072471
- https://snyk.io/vuln/SNYK-JS-UAPARSERJS-610226

package.json

@@ -5,13 +5,13 @@
     "start": "NODE_ENV=production node server.js"
   },
   "dependencies": {
-    "axios": "^0.18.0",
+    "axios": "^0.21.1",
     "express": "^4.16.3",
     "lodash": "^4.17.12",
     "moment": "^2.22.1",
     "next": "^7.0.0",
     "react": "^16.4.0",
-    "react-dom": "^16.4.0",
+    "react-dom": "^16.4.2",
     "shelljs": "^0.8.2"
   }
 }