Use Java 21 on Windows GHA runners #370
Merged
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Parallel to iiasa/ixmp#586 and iiasa/message_ix#962, use a version of Java compatible with JPype1 v1.6.0. This version was released 2025-07-07 and triggered failures of the
windows-latest-py3.13-upstream-*scheduled testing jobs, for instance here.How to review
Note that the CI checks all pass on the jobs labeled "(pull_request)" (not pull_request_target). → run #3827
PR checklist
Add or expand tests;coverage checks both ✅Add, expand, or update documentation.N/A; CI changes only.Update doc/whatsnew.