Replace commons-fileupload with servlet 3.0 multipart support

[abrokenjester]

Discussed in #4370

^{Originally posted by erikgb January 18, 2023}
I am looking at #3559, as it represents a total blocker for upgrading spring/spring-boot for us in a project that also has dependencies to rdf4j. This is assumed a significant task, so it has to be divided into parts. And I hope some of it can be done pre-migrating javax -> jakarta.

One blocker I have identified is the dependency we have to commons-fileupload (in rdf4j-http-workbench). commons-fileupload does not have any new releases since 2018, and it should not really be required - as servlet 3.0 added support for in-tree multipart handling: https://docs.oracle.com/javaee/7/tutorial/servlets011.htm

Do you think this is doable? I don't see how I could do this effectively - without some knowledge of how the rdf4j-http-workbench fits in the overall rdf4j ecosystem, and would at least require some input from maintainers!

[abrokenjester]

Didn't realise you had already created an issue: #4374. Closing this as a duplicate