chore(deps): update dependency org.apache.struts:struts2-core to v2.5.31 - autoclosed

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

This PR contains the following updates:

Package	Type	Update	Change
org.apache.struts:struts2-core (source)	compile	minor	2.3.20 -> 2.5.31

By merging this PR, the issue #107 will be automatically resolved and closed:

Severity	CVSS Score	CVE
Critical	10.0	CVE-2017-5638
Critical	9.8	CVE-2016-3082
Critical	9.8	CVE-2016-3087
Critical	9.8	CVE-2016-4436
Critical	9.8	CVE-2016-6795
Critical	9.8	CVE-2017-12611
Critical	9.8	CVE-2019-0230
Critical	9.8	CVE-2020-17530
Critical	9.8	CVE-2021-31805
High	8.8	CVE-2016-4430
High	8.1	CVE-2016-3081
High	8.1	CVE-2018-11776
High	7.5	CVE-2016-4431
High	7.5	CVE-2019-0233
High	7.5	CVE-2023-34396
Medium	6.5	CVE-2023-34149
Medium	6.1	CVE-2015-2992
Medium	6.1	CVE-2015-5169
Medium	6.1	CVE-2016-4003

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