Bump esmock from 2.6.3 to 2.6.4 in /lambda

Bumps [esmock](https://github.com/iambumblehead/esmock) from 2.6.3 to 2.6.4.
- [Release notes](https://github.com/iambumblehead/esmock/releases)
- [Changelog](https://github.com/iambumblehead/esmock/blob/main/CHANGELOG.md)
- [Commits](iambumblehead/esmock@v2.6.3...v2.6.4)

---
updated-dependencies:
- dependency-name: esmock
  dependency-type: direct:development
  update-type: version-update:semver-patch
...

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

lambda/package.json

@@ -41,7 +41,7 @@
     "eslint-config-prettier": "^9.1.0",
     "eslint-plugin-n": "^16.6.2",
     "eslint-plugin-prettier": "^5.1.2",
-    "esmock": "^2.6.3",
+    "esmock": "^2.6.4",
     "mocha": "^10.2.0",
     "nock": "^13.5.1",
     "prettier": "^3.1.1",