[Snyk] Upgrade mongoose from 8.18.0 to 8.18.1

[desujoy]

Snyk has created this PR to upgrade mongoose from 8.18.0 to 8.18.1.

ℹ️ Keep your dependencies up-to-date. This makes it easier to fix existing vulnerabilities and to more quickly identify and fix newly disclosed vulnerabilities when they affect your project.

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• The recommended version is 1 version ahead of your current version.

• The recommended version was released 24 days ago.

Release notes

Package name: mongoose

• 8.18.1 - 2025-09-08
  

  8.18.1 / 2025-09-08

  • types: correct type inference for maps of maps #15602
  • types(model): copy base model statics onto discriminator model #15623 #15600
  • types: fix types for a string of enums #15605 ruiaraujo
  • types(SchemaOptions): disallow versionKey: true, which fails at runtime #15606
  • docs(typescript): add example explaining how to use query helper overrides for handling lean() #15622 #15601
  • docs(transactions): add note about nested transactions #15624
• 8.18.0 - 2025-08-22
  

  8.18.0 / 2025-08-22

  • feat(schema): support for union types #15574 #10894
  • fix: trim long strings in minLength and maxLength error messages and display the string length #15571 #15550
  • types(connection+collection): make BaseCollection and BaseConnection usable as values #15575 #15548
  • types: remove logic that omits timestamps when virtuals, methods, etc. options set #15577 #12807

from mongoose GitHub release notes

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