fix(deps): update dependency nodemailer to v6.9.9 [security] (#6104)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [nodemailer](https://nodemailer.com/)
([source](https://togithub.com/nodemailer/nodemailer)) | [`6.9.8` ->
`6.9.9`](https://renovatebot.com/diffs/npm/nodemailer/6.9.8/6.9.9) |
[![age](https://developer.mend.io/api/mc/badges/age/npm/nodemailer/6.9.9?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![adoption](https://developer.mend.io/api/mc/badges/adoption/npm/nodemailer/6.9.9?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![passing](https://developer.mend.io/api/mc/badges/compatibility/npm/nodemailer/6.9.8/6.9.9?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/npm/nodemailer/6.9.8/6.9.9?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

### GitHub Vulnerability Alerts

####
[GHSA-9h6g-pr28-7cqp](https://togithub.com/nodemailer/nodemailer/security/advisories/GHSA-9h6g-pr28-7cqp)

### Summary
A ReDoS vulnerability occurs when nodemailer tries to parse img files
with the parameter `attachDataUrls` set, causing the stuck of event
loop.
Another flaw was found when nodemailer tries to parse an attachments
with a embedded file, causing the stuck of event loop.

### Details

Regex: /^data:((?:[^;]*;)*(?:[^,]*)),(.*)$/

Path: compile -> getAttachments -> _processDataUrl

Regex: /(<img\b[^>]* src\s*=[\s"']*)(data:([^;]+);[^"'>\s]+)/

Path: _convertDataImages

### PoC

https://gist.github.com/francoatmega/890dd5053375333e40c6fdbcc8c58df6
https://gist.github.com/francoatmega/9aab042b0b24968d7b7039818e8b2698

### Impact

ReDoS causes the event loop to stuck a specially crafted evil email can
cause this problem.

---

### Release Notes

<details>
<summary>nodemailer/nodemailer (nodemailer)</summary>

###
[`v6.9.9`](https://togithub.com/nodemailer/nodemailer/blob/HEAD/CHANGELOG.md#699-2024-02-01)

[Compare
Source](https://togithub.com/nodemailer/nodemailer/compare/v6.9.8...v6.9.9)

##### Bug Fixes

- **security:** Fix issues described in GHSA-9h6g-pr28-7cqp. Do not use
eternal matching pattern if only a few occurences are expected
([dd8f5e8](dd8f5e8a4d))
- **tests:** Use native node test runner, added code coverage support,
removed grunt
([#&#8203;1604](https://togithub.com/nodemailer/nodemailer/issues/1604))
([be45c1b](be45c1b299))

</details>

---

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---

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yarn.lock

@@ -5246,9 +5246,9 @@ node-releases@^2.0.6:
   integrity sha512-dFSmB8fFHEH/s81Xi+Y/15DQY6VHW81nXRj86EMSL3lmuTmK1e+aT4wrFCkTbm+gSwkw4KpX+rT/pMM2c1mF+A==
 
 nodemailer@^6.5.0:
-  version "6.9.8"
+  version "6.9.9"
-  resolved "https://registry.yarnpkg.com/nodemailer/-/nodemailer-6.9.8.tgz#29601e80440f2af7aa62b32758fdac7c6b784143"
+  resolved "https://registry.yarnpkg.com/nodemailer/-/nodemailer-6.9.9.tgz#4549bfbf710cc6addec5064dd0f19874d24248d9"
-  integrity sha512-cfrYUk16e67Ks051i4CntM9kshRYei1/o/Gi8K1d+R34OIs21xdFnW7Pt7EucmVKA0LKtqUGNcjMZ7ehjl49mQ==
+  integrity sha512-dexTll8zqQoVJEZPwQAKzxxtFn0qTnjdQTchoU6Re9BUUGBJiOy3YMn/0ShTW6J5M0dfQ1NeDeRTTl4oIWgQMA==
 
 noms@0.0.0:
   version "0.0.0"