Update dependency nodemailer to ^6.9.15 (main) (elastic#192527)

This PR contains the following updates:

| Package | Type | Update | Change |
|---|---|---|---|
| [nodemailer](https://nodemailer.com/)
([source](https://github.com/nodemailer/nodemailer)) | dependencies |
patch | [`^6.9.14` ->
`^6.9.15`](https://renovatebot.com/diffs/npm/nodemailer/6.9.14/6.9.15) |

---

### Release Notes

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

###
[`v6.9.15`](https://github.com/nodemailer/nodemailer/blob/HEAD/CHANGELOG.md#6915-2024-08-08)

[Compare
Source](https://github.com/nodemailer/nodemailer/compare/v6.9.14...v6.9.15)

##### Bug Fixes

- Fix memory leak
([#&elastic#8203;1667](https://github.com/nodemailer/nodemailer/issues/1667))
([baa28f6](https://github.com/nodemailer/nodemailer/commit/baa28f659641a4bc30360633673d851618f8e8bd))
- **mime:** Added GeoJSON closes
[#&elastic#8203;1637](https://github.com/nodemailer/nodemailer/issues/1637)
([#&elastic#8203;1665](https://github.com/nodemailer/nodemailer/issues/1665))
([79b8293](https://github.com/nodemailer/nodemailer/commit/79b8293ad557d36f066b4675e649dd80362fd45b))

</details>

---

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---

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---

This PR has been generated by [Renovate
Bot](https://github.com/renovatebot/renovate).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNy40MjUuMSIsInVwZGF0ZWRJblZlciI6IjM3LjQyNS4xIiwidGFyZ2V0QnJhbmNoIjoibWFpbiIsImxhYmVscyI6WyJiYWNrcG9ydDpwcmV2LW1pbm9yIiwicmVsZWFzZV9ub3RlOnNraXAiXX0=-->

Co-authored-by: elastic-renovate-prod[bot] <174716857+elastic-renovate-prod[bot]@users.noreply.github.com>
Co-authored-by: Julian Gernun <[email protected]>

package.json

@@ -1149,7 +1149,7 @@
     "node-diff3": "^3.1.2",
     "node-fetch": "^2.6.7",
     "node-forge": "^1.3.1",
-    "nodemailer": "^6.9.14",
+    "nodemailer": "^6.9.15",
     "normalize-path": "^3.0.0",
     "nunjucks": "^3.2.4",
     "object-hash": "^1.3.1",

yarn.lock

@@ -24170,10 +24170,10 @@ node-version@^1.0.0:
   resolved "https://registry.yarnpkg.com/node-version/-/node-version-1.2.0.tgz#34fde3ffa8e1149bd323983479dda620e1b5060d"
   integrity sha512-ma6oU4Sk0qOoKEAymVoTvk8EdXEobdS7m/mAGhDJ8Rouugho48crHBORAmy5BoOcv8wraPM6xumapQp5hl4iIQ==
 
-nodemailer@^6.9.14:
-  version "6.9.14"
-  resolved "https://registry.yarnpkg.com/nodemailer/-/nodemailer-6.9.14.tgz#845fda981f9fd5ac264f4446af908a7c78027f75"
-  integrity sha512-Dobp/ebDKBvz91sbtRKhcznLThrKxKt97GI2FAlAyy+fk19j73Uz3sBXolVtmcXjaorivqsbbbjDY+Jkt4/bQA==
+nodemailer@^6.9.15:
+  version "6.9.15"
+  resolved "https://registry.yarnpkg.com/nodemailer/-/nodemailer-6.9.15.tgz#57b79dc522be27e0e47ac16cc860aa0673e62e04"
+  integrity sha512-AHf04ySLC6CIfuRtRiEYtGEXgRfa6INgWGluDhnxTZhHSKvrBu7lc1VVchQ0d8nPc4cFaZoPq8vkyNoZr0TpGQ==
 
 nopt@^4.0.1:
   version "4.0.3"