chore(deps): update dependency com.thoughtworks.xstream:xstream to v1.4.21

[mend-for-github-com]

This PR contains the following updates:

Package	Type	Update	Change
com.thoughtworks.xstream:xstream (source)	compile	patch	1.4.5 -> 1.4.21

By merging this PR, the issue #10 will be automatically resolved and closed:

Severity	CVSS Score	CVE	Reachability
Critical	9.8	CVE-2013-7285	Reachable
High	8.5	CVE-2021-39139	Unreachable
High	8.5	CVE-2021-39141	Unreachable
High	8.5	CVE-2021-39144	Reachable
High	8.5	CVE-2021-39145	Reachable
High	8.5	CVE-2021-39146	Reachable
High	8.5	CVE-2021-39147	Reachable
High	8.5	CVE-2021-39148	Reachable
High	8.5	CVE-2021-39149	Reachable
High	8.5	CVE-2021-39150	Unreachable
High	8.5	CVE-2021-39151	Reachable
High	8.5	CVE-2021-39152	Reachable
High	8.5	CVE-2021-39153	Reachable
High	8.5	CVE-2021-39154	Reachable
High	8.2	CVE-2022-41966	Reachable
High	8.0	CVE-2020-26217	Reachable
High	7.5	CVE-2016-3674	Unreachable
High	7.5	CVE-2017-7957	Reachable
High	7.5	CVE-2021-21341	Reachable
High	7.5	CVE-2021-29505	Reachable
High	7.5	CVE-2021-43859	Reachable
High	7.5	CVE-2024-47072	Reachable
Medium	6.8	CVE-2020-26259	Reachable
Medium	6.5	CVE-2021-39140	Reachable
Medium	6.5	CVE-2022-40151	Reachable
Medium	6.3	CVE-2020-26258	Reachable
Medium	6.1	CVE-2021-21346	Reachable
Medium	6.1	CVE-2021-21347	Reachable
Medium	6.1	CVE-2021-21349	Reachable
Medium	5.8	CVE-2021-21345	Reachable
Medium	5.4	CVE-2021-21351	Reachable
Medium	5.3	CVE-2021-21342	Reachable
Medium	5.3	CVE-2021-21343	Reachable
Medium	5.3	CVE-2021-21344	Reachable
Medium	5.3	CVE-2021-21348	Reachable
Medium	5.3	CVE-2021-21350	Reachable

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