Upgrade Express to version 5

[jainakanksha-msft]

Summary

• upgrade express from 4.16.4 to 5.2.1
• upgrade @types/express to 5.0.6
• declare @types/mime directly because it is no longer supplied transitively by the Express type packages
• document the dependency migration in the Upcoming Release changelog

Azurite's middleware-only internal dispatch does not use Express route patterns, so no application source changes were required for Express 5 compatibility.

Validation

• npm run build
• npm test (791 passing, 4 pending)
• git diff --check

[Copilot]

Pull request overview

This pull request upgrades Azurite’s Express dependency stack to Express 5, along with the corresponding TypeScript type packages, and records the migration in the changelog.

Changes:

• Upgraded express from the 4.x line to ^5.2.1.
• Upgraded @types/express to ^5.0.6 and added @types/mime as an explicit dev dependency.
• Documented the dependency migration in ChangeLog.md.

Reviewed changes

Copilot reviewed 2 out of 3 changed files in this pull request and generated 1 comment.

File	Description
package.json	Bumps Express and Express typings; adds explicit @types/mime.
package-lock.json	Updates the resolved dependency graph for Express 5 and its transitive dependencies.
ChangeLog.md	Notes the Express/typing dependency migration in the “Upcoming Release” section.

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[Copilot]

Pull request overview

Copilot reviewed 2 out of 3 changed files in this pull request and generated no new comments.

[Copilot]

Pull request overview

Copilot reviewed 2 out of 3 changed files in this pull request and generated no new comments.