solfuzzer crashes in nightly

[Marenz]

Our nightly test t_ubu_ubsan_clang_cli fails sometimes with

Testing soljson via the fuzzer...
xargs: /root/project/build/test/tools/solfuzzer: terminated by signal 9

[cameel]

I think it's running out of memory. Same for the codecov job. Using a higher resource class should be enough to fix it.

[cameel]

Reopening since this is still happening, just with the other jobs: t_ubu_asan_cli and t_ubu_codecov. They should be adjusted too.

[cameel]

Fixed in #13793.