[SCA] Security upgrade @org.apache.logging.log4j:log4j-core from 2.14.1 to 2.15.0

[gwnlng]

This is a PR from Snyk, initiated by the Security team, to fix 1 vulnerabilities in the dependencies of this project.
Snyk changed the following file(s):
log4shell-goof/log4shell-client/pom.xml

[!IMPORTANT]

• This PR was automatically generated by our security tool to help you fix known vulnerabilities in your project's third-party libraries more efficiently. However, there is a possibility that these changes could introduce functional regressions or breakages. Please ensure you test this PR thoroughly before merging.
• If you have any questions or concerns, please seek support in the #sca-support Slack channel.

References:

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[snyk-io]

✅ Snyk checks have passed. No issues have been found so far.

Status	Scanner	Critical	High	Medium	Low	Total (0)
✅	Licenses	0	0	0	0	0 issues
✅	Open Source Security	0	0	0	0	0 issues

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[gwnlng]

✅ Snyk checks have passed. No issues have been found so far.

Status	Scanner	Critical	High	Medium	Low	Total (0)
✅	Licenses	0	0	0	0	0 issues
✅	Code Security	0	0	0	0	0 issues
✅	Open Source Security	0	0	0	0	0 issues

💻 Catch issues earlier using the plugins for VS Code, JetBrains IDEs, Visual Studio, and Eclipse.