test: move heapdump tests to pummel
The heapdump tests take a lot more time to run than our other tests in parallel. They are also a bit of an internal test that perhaps does not need to be run on every commit on every platform. This change moves them to the pummel directory where they will be run on a single platform once a day in CI.
This shaves more than 20 seconds off make test
on my laptop, FWIW.
@addaleax @Fishrock123
Checklist
-
make -j4 test
(UNIX), orvcbuild test
(Windows) passes -
commit message follows commit guidelines