fix: package.json & package-lock.json to reduce vulnerabilities (#27)

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-AXIOS-1579269

package.json

@@ -19,7 +19,7 @@
   "dependencies": {
     "@sendgrid/mail": "^7.4.4",
     "app-root-path": "^3.0.0",
-    "axios": "^0.21.2",
+    "axios": "^0.21.3",
     "cookie-parser": "^1.4.5",
     "express": "^4.17.1",
     "express-rate-limit": "^5.2.6",
@@ -27,7 +27,7 @@
     "helmet": "^4.6.0",
     "http-errors": "^1.8.0",
     "morgan": "^1.10.0",
-    "nodemailer": "^6.6.1",
+    "nodemailer": "^6.6.0",
     "pug": "^3.0.2",
     "tailwind-hamburgers": "^1.1.1",
     "winston": "^3.3.3",