[Snyk] Upgrade ch.qos.logback:logback-classic from 1.3.14 to 1.5.18

[iText-CI]

Snyk has created this PR to upgrade ch.qos.logback:logback-classic from 1.3.14 to 1.5.18.

:information_source: Keep your dependencies up-to-date. This makes it easier to fix existing vulnerabilities and to more quickly identify and fix newly disclosed vulnerabilities when they affect your project.

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• The recommended version is 35 versions ahead of your current version.

• The recommended version was released 2 months ago.

Issues fixed by the recommended upgrade:

	Issue	Score	Exploit Maturity
	Improper Neutralization of Special Elements SNYK-JAVA-CHQOSLOGBACK-8539866	334	No Known Exploit
	Improper Neutralization of Special Elements SNYK-JAVA-CHQOSLOGBACK-8539867	334	No Known Exploit
	Server-side Request Forgery (SSRF) SNYK-JAVA-CHQOSLOGBACK-8539865	334	No Known Exploit

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[!IMPORTANT]

• Check the changes in this PR to ensure they won't cause issues with your project.
• This PR was automatically created by Snyk using the credentials of a real user.
• Max score is 1000. Note that the real score may have changed since the PR was raised.

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