Update dependency org.pac4j:pac4j-saml to v5 (main)

[mend-for-github-com]

This PR contains the following updates:

Package	Type	Update	Change
org.pac4j:pac4j-saml	compile	major	2.3.1 -> 5.4.1

By merging this PR, the issue #147 will be automatically resolved and closed:

Severity	CVSS Score	Vulnerability	Reachability
High	7.5	CVE-2018-1000180
High	7.5	CVE-2018-1272
High	7.5	CVE-2019-17359
High	7.5	CVE-2020-7226
High	7.5	CVE-2021-40690
Medium	5.9	CVE-2020-15522
Medium	5.5	CVE-2019-12400
Medium	5.3	CVE-2018-1199
Medium	5.3	CVE-2020-13956
Medium	5.3	CVE-2020-26939
Medium	5.3	CVE-2022-22970
Medium	5.3	WS-2017-3734
Medium	4.3	CVE-2021-22060
Medium	4.3	CVE-2021-22096

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