Bump nodemailer from 6.3.1 to 6.4.0

Bumps [nodemailer](https://github.com/nodemailer/nodemailer) from 6.3.1 to 6.4.0.
- [Release notes](https://github.com/nodemailer/nodemailer/releases)
- [Changelog](https://github.com/nodemailer/nodemailer/blob/master/CHANGELOG.md)
- [Commits](https://github.com/nodemailer/nodemailer/compare/v6.3.1...v6.4.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

package-lock.json

@@ -4476,9 +4476,9 @@
       }
     },
     "nodemailer": {
-      "version": "6.3.1",
-      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.3.1.tgz",
-      "integrity": "sha512-j0BsSyaMlyadEDEypK/F+xlne2K5m6wzPYMXS/yxKI0s7jmT1kBx6GEKRVbZmyYfKOsjkeC/TiMVDJBI/w5gMQ=="
+      "version": "6.4.0",
+      "resolved": "https://registry.npmjs.org/nodemailer/-/nodemailer-6.4.0.tgz",
+      "integrity": "sha512-UBqPOfQGD1cM3HnjhuQe+0u3DWx47WWK7lBjG5UtPnGOysr7oDK5lNCzcjK6zzeBSdTk4m1tGx1xNbWFZQmMNA=="
     },
     "nodemon": {
       "version": "2.0.1",

package.json

@@ -37,7 +37,7 @@
     "ip-address": "^6.1.0",
     "js-yaml": "^3.13.1",
     "kafka-node": "^5.0.0",
-    "nodemailer": "^6.3.1",
+    "nodemailer": "^6.4.0",
     "path": "^0.12.7",
     "pkg": "^4.4.0",
     "pubsub-js": "^1.7.0",

yarn.lock

@@ -3388,10 +3388,10 @@ node-releases@^1.1.25:
   dependencies:
     semver "^5.3.0"
 
-nodemailer@^6.3.1:
-  version "6.3.1"
-  resolved "https://registry.yarnpkg.com/nodemailer/-/nodemailer-6.3.1.tgz#2784beebac6b9f014c424c54dbdcc5c4d1221346"
-  integrity sha512-j0BsSyaMlyadEDEypK/F+xlne2K5m6wzPYMXS/yxKI0s7jmT1kBx6GEKRVbZmyYfKOsjkeC/TiMVDJBI/w5gMQ==
+nodemailer@^6.4.0:
+  version "6.4.0"
+  resolved "https://registry.yarnpkg.com/nodemailer/-/nodemailer-6.4.0.tgz#91482ebc09d39156d933eb9e6159642cd27bf02c"
+  integrity sha512-UBqPOfQGD1cM3HnjhuQe+0u3DWx47WWK7lBjG5UtPnGOysr7oDK5lNCzcjK6zzeBSdTk4m1tGx1xNbWFZQmMNA==
 
 nodemon@^2.0.1:
   version "2.0.1"