Upgrade backend packages

[stasel]

• Update all packages to the latest version
• Fixed TS errors with missing casting on express query params

[Copilot]

Pull request overview

This PR upgrades backend packages, particularly addressing compatibility issues with AWS SDK v3. The changes include updating dependency versions in package.json and adding explicit String() conversions for request parameters throughout the codebase.

Changes:

• Upgraded multiple packages including AWS SDK, Sentry, Mongoose, and various dev dependencies
• Added String() wrapper to all req.params accesses to ensure type safety
• Modified controller methods across User, Trainee, Test, Strike, Interaction, and other related modules

Reviewed changes

Copilot reviewed 9 out of 10 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
server/package.json	Updated versions for AWS SDK, Sentry, Mongoose, faker, dotenv, and various @types packages
server/src/controllers/UserController.ts	Wrapped userId extraction with String() in updateUser and deleteUser methods
server/src/controllers/Trainee/TraineeController.ts	Added String() conversion for trainee ID parameters
server/src/controllers/Trainee/TestController.ts	Applied String() conversion to trainee and test ID parameters across multiple methods
server/src/controllers/Trainee/StrikeController.ts	Wrapped trainee and strike ID parameters with String()
server/src/controllers/Trainee/ProfilePictureController.ts	Added String() conversion for trainee ID in profile picture operations
server/src/controllers/Trainee/LetterController.ts	Wrapped trainee ID with String() in letter generation
server/src/controllers/Trainee/InteractionController.ts	Applied String() conversion to trainee and interaction ID parameters
server/src/controllers/Trainee/EmploymentHistoryController.ts	Added String() wrapper for trainee and employment history ID parameters

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[Copilot]

Pull request overview

Copilot reviewed 9 out of 10 changed files in this pull request and generated no new comments.

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