Revert "gh-116886: Temporarily disable CIfuzz (memory) (GH-117018)" (GH-117289)

This reverts commit 1ab0d0b1167d78bf19661a3b5e533a2b68a57604.

This reverts #117018.

I expect the issue to be fixed based on https://github.com/google/oss-fuzz/pull/11708#issuecomment-2006442396 and https://github.com/actions/runner-images/issues/9491.
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