Update ixmp.jar and dependencies

[fonfon]

Update the ixmp.jar and the java dependencies.

• update dependencies of ixmp.jar
• ixmp_source diff: https://github.com/iiasa/ixmp_source/compare/07b82efe90a6590b30cc764804f1e9187e9cfb55...8ea775a091d213a981b9f82a2bb3622d7ee77fbe - the most relevant being:
  • support retrieving IDs of >1000 regions and units
  • bugfix in retrieving meta indicators

How to review

It'd be good to check that functionality related to the dependencies, like the r bindings or running on various platforms, works. The test_tutorials.py tests are failing - this has to be clarified before merging (thus the draft state). update With #371 being merged the r-tests pass now, thanks Paul!

PR checklist

• [ ] Add or expand tests.
• [ ] Add, expand, or update documentation.

• [ ] Update release notes.

[codecov[bot]]

Codecov Report

Merging #370 into master will not change coverage. The diff coverage is 100.0%.

@@          Coverage Diff           @@
##           master    #370   +/-   ##
======================================
  Coverage    96.8%   96.8%           
======================================
  Files          46      46           
  Lines        5253    5253           
======================================
  Hits         5086    5086           
  Misses        167     167           

Impacted Files	Coverage Δ
ixmp/tests/core/test_meta.py	100.0% <100.0%> (ø)

[khaeru]

The test_tutorials.py tests are failing…

I investigated and fixed this in #371. Please rebase this branch and confirm that checks pass.