upgrade to GnuCOBOL 3.2

[axtens]

A student notified me of the fact that the documentation says B-OR but the current compiler doesn't take without complaint. 3.2 has been out for a while and is stable.

[axtens]

Looks like the tests will have to be re-examined.

[ErikSchierboom]

@axtens The expected results have changed a bit with this change. The easiest way to remedy this is to:

1. Run ./bin/run-tests-in-docker.sh
2. Run find tests -name results.json -execdir cp results.json expected_results.json \;
3. Inspect the git diff to see if the changes make sense
4. If they do, update the PR

[axtens]

Thank you!

[axtens]

@ErikSchierboom PR updated. Ready to go.

[ErikSchierboom]

LGTM!