[Snyk] Fix for 3 vulnerabilities

[ThinuwanW]

Snyk has created this PR to fix 3 vulnerabilities in the maven dependencies of this project.

Snyk changed the following file(s):

• backend/pom.xml

Vulnerabilities that will be fixed with an upgrade:

	Issue	Score	Upgrade
	HTTP Request Smuggling SNYK-JAVA-IONETTY-12485149	828	com.google.firebase:firebase-admin: 9.5.0 -> 9.6.0 software.amazon.awssdk:s3: 2.31.56 -> 2.33.5 Proof of Concept
	Improper Handling of Highly Compressed Data (Data Amplification) SNYK-JAVA-IONETTY-12485150	828	software.amazon.awssdk:s3: 2.31.56 -> 2.33.5 Proof of Concept
	Improper Handling of Highly Compressed Data (Data Amplification) SNYK-JAVA-IONETTY-12485151	828	software.amazon.awssdk:s3: 2.31.56 -> 2.33.5 Proof of Concept

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[Copilot]

Pull Request Overview

This PR addresses 3 high-severity security vulnerabilities by upgrading Maven dependencies. The changes focus on fixing HTTP Request Smuggling and Improper Handling of Highly Compressed Data vulnerabilities in the Netty library through transitive dependency updates.

• Upgrades Firebase Admin SDK from 9.5.0 to 9.6.0
• Upgrades AWS SDK S3 from 2.31.56 to 2.33.5

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

See analysis details on SonarQube Cloud