Bump log4j.version from 2.2 to 2.13.3 in /mrchecker-framework-modules/mrchecker-core-module

[dependabot[bot]]

Bumps log4j.version from 2.2 to 2.13.3. Updates log4j-api from 2.2 to 2.13.3

Updates log4j-core from 2.2 to 2.13.3

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[CLAassistant]

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2 out of 3 committers have signed the CLA.

:white_check_mark: Pyskaczu
:white_check_mark: mbabiarzCap
:x: dependabot[bot]
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[other019]

Probably this is caused by https://www.cvedetails.com/cve/CVE-2017-5645/. This would mean that we won't be affected until we make custom log4j config consiting log4j tcp/udp server (for example to collect logs from multiple machines). However it should be updated any way during #28 resolution

[michalbabiarz]

Due to missing CLA from "dependabot[bot]" this issue should be handled manually in a separate thread.

[dependabot[bot]]

OK, I won't notify you again about this release, but will get in touch when a new version is available.

If you change your mind, just re-open this PR and I'll resolve any conflicts on it.