[Snyk] Fix for 2 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
	509/1000 Why? Has a fix available, CVSS 5.9	Deserialization of Untrusted Data SNYK-JAVA-COMGOOGLEGUAVA-32236	ca.mcgill.sable:soot: 3.3.0 -> 4.1.0	Yes	No Known Exploit
	479/1000 Why? Has a fix available, CVSS 5.3	Directory Traversal SNYK-JAVA-COMMONSIO-1277109	com.ibm.wala:com.ibm.wala.cast: 1.5.4 -> 1.5.6 com.ibm.wala:com.ibm.wala.cast.java: 1.5.4 -> 1.5.6 com.ibm.wala:com.ibm.wala.cast.java.ecj: 1.5.4 -> 1.5.6	No	No Known Exploit

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

Check the changes in this PR to ensure they won't cause issues with your project.

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