[Snyk] Fix for 8 vulnerabilities

[trongthanht3]

Snyk has created this PR to fix 8 vulnerabilities in the npm dependencies of this project.

Snyk changed the following file(s):

• package.json

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score
	Improper Authorization SNYK-JS-NEXT-9508709	851
	Server-side Request Forgery (SSRF) SNYK-JS-NEXT-12299318	736
	Race Condition SNYK-JS-NEXT-10176058	636
	Allocation of Resources Without Limits or Throttling SNYK-JS-NEXT-8602067	559
	Use of Cache Containing Sensitive Information SNYK-JS-NEXT-12301496	529
	Regular Expression Denial of Service (ReDoS) SNYK-JS-BRACEEXPANSION-9789073	436
	Missing Origin Validation in WebSockets SNYK-JS-NEXT-10259370	329
	Missing Source Correlation of Multiple Independent Data SNYK-JS-NEXT-12265451	329

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• Max score is 1000. Note that the real score may have changed since the PR was raised.
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[Copilot]

Pull Request Overview

This PR updates dependencies to fix 8 security vulnerabilities identified by Snyk, including critical and high severity issues in Next.js and other packages.

• Updates Next.js from version 15.0.0 to 15.4.2 to address 7 vulnerabilities including improper authorization and SSRF
• Updates bcrypt from version 5.1.1 to 6.0.0 to address security concerns
• Addresses vulnerabilities ranging from critical (score 851) to low severity (score 329)

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