Update dependency io.buji:buji-pac4j to v9 (main)

[mend-for-github-com[bot]]

This PR contains the following updates:

Package	Type	Update	Change
io.buji:buji-pac4j	compile	major	3.2.0 -> 9.0.0

By merging this PR, the issue #156 will be automatically resolved and closed:

Severity	CVSS Score	CVE	Reachability
Critical	9.8	CVE-2020-11989
Critical	9.8	CVE-2020-17510
Critical	9.8	CVE-2020-1957
Critical	9.8	CVE-2021-41303
Critical	9.8	CVE-2022-32532
Critical	9.8	CVE-2022-40664
Critical	9.8	CVE-2023-25581
Critical	9.8	CVE-2023-34478
High	7.5	CVE-2019-12422
High	7.5	CVE-2020-13933
High	7.3	CVE-2014-0114
High	7.3	CVE-2019-10086

---

• [ ] If you want to rebase/retry this PR, check this box