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

The following vulnerabilities are fixed with an upgrade:
- https://snyk.io/vuln/SNYK-JS-NODEMAILER-6219989

package-lock.json

@@ -19,7 +19,7 @@
         "helmet": "^4.6.0",
         "http-errors": "^1.8.0",
         "morgan": "^1.10.0",
-        "nodemailer": "^6.6.1",
+        "nodemailer": "^6.9.9",
         "npm-watch": "^0.11.0",
         "postcss-cli": "^8.3.1",
         "pug": "^3.0.2",
@@ -2276,9 +2276,9 @@
       "integrity": "sha512-Qe5OUajvqrqDSy6wrWFmMwfJ0jVgwiw4T3KqmbTcZ62qW0gQkheXYhcFM1+lOVcGUoRxcEcfyvFMAnDgaF1VWw=="
     },
     "node_modules/nodemailer": {
-      "version": "6.6.1",
-      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.6.1.tgz",
-      "integrity": "sha512-1xzFN3gqv+/qJ6YRyxBxfTYstLNt0FCtZaFRvf4Sg9wxNGWbwFmGXVpfSi6ThGK6aRxAo+KjHtYSW8NvCsNSAg==",
+      "version": "6.9.9",
+      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.9.9.tgz",
+      "integrity": "sha512-dexTll8zqQoVJEZPwQAKzxxtFn0qTnjdQTchoU6Re9BUUGBJiOy3YMn/0ShTW6J5M0dfQ1NeDeRTTl4oIWgQMA==",
       "engines": {
         "node": ">=6.0.0"
       }
@@ -5594,9 +5594,9 @@
       "integrity": "sha512-Qe5OUajvqrqDSy6wrWFmMwfJ0jVgwiw4T3KqmbTcZ62qW0gQkheXYhcFM1+lOVcGUoRxcEcfyvFMAnDgaF1VWw=="
     },
     "nodemailer": {
-      "version": "6.6.1",
-      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.6.1.tgz",
-      "integrity": "sha512-1xzFN3gqv+/qJ6YRyxBxfTYstLNt0FCtZaFRvf4Sg9wxNGWbwFmGXVpfSi6ThGK6aRxAo+KjHtYSW8NvCsNSAg=="
+      "version": "6.9.9",
+      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.9.9.tgz",
+      "integrity": "sha512-dexTll8zqQoVJEZPwQAKzxxtFn0qTnjdQTchoU6Re9BUUGBJiOy3YMn/0ShTW6J5M0dfQ1NeDeRTTl4oIWgQMA=="
     },
     "nodemon": {
       "version": "2.0.12",

package.json

@@ -27,7 +27,7 @@
     "helmet": "^4.6.0",
     "http-errors": "^1.8.0",
     "morgan": "^1.10.0",
-    "nodemailer": "^6.6.1",
+    "nodemailer": "^6.9.9",
     "pug": "^3.0.2",
     "tailwind-hamburgers": "^1.1.1",
     "winston": "^3.3.3",