[Snyk] Fix for 3 vulnerabilities

[snyk-bot]

Snyk has created this PR to fix one or more vulnerable packages in the `maven` dependencies of this project.

Changes included in this PR

• Changes to the following files to upgrade the vulnerable dependencies to a fixed version:
  • pom.xml

Vulnerabilities that will be fixed

With an upgrade:

Severity	Priority Score (*)	Issue	Upgrade	Breaking Change	Exploit Maturity
	551/1000 Why? Recently disclosed, Has a fix available, CVSS 5.3	Denial of Service (DoS) SNYK-JAVA-ORGSPRINGFRAMEWORK-2434828	org.springframework.security:spring-security-core: 3.2.3.RELEASE -> 5.5.6 org.springframework.security:spring-security-taglibs: 3.2.3.RELEASE -> 5.5.6 org.springframework.security:spring-security-web: 3.2.3.RELEASE -> 5.5.6	Yes	No Known Exploit
	947/1000 Why? Mature exploit, Recently disclosed, Has a fix available, CVSS 9.8	Remote Code Execution SNYK-JAVA-ORGSPRINGFRAMEWORK-2436751	org.springframework.security:spring-security-config: 3.2.3.RELEASE -> 5.5.6 org.springframework.security:spring-security-core: 3.2.3.RELEASE -> 5.5.6 org.springframework.security:spring-security-taglibs: 3.2.3.RELEASE -> 5.5.6 org.springframework.security:spring-security-web: 3.2.3.RELEASE -> 5.5.6	Yes	Mature
	471/1000 Why? Recently disclosed, Has a fix available, CVSS 3.7	Improper Handling of Case Sensitivity SNYK-JAVA-ORGSPRINGFRAMEWORK-2689634	org.springframework.security:spring-security-config: 3.2.3.RELEASE -> 5.5.6 org.springframework.security:spring-security-core: 3.2.3.RELEASE -> 5.5.6 org.springframework.security:spring-security-taglibs: 3.2.3.RELEASE -> 5.5.6 org.springframework.security:spring-security-web: 3.2.3.RELEASE -> 5.5.6	Yes	No Known Exploit

(*) Note that the real score may have changed since the PR was raised.

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