Bump timeout for test-engine-test.rkt to 8 minutes.
Bump timeout for test-engine-test.rkt to 8 minutes.

DrDr keep going over.

mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket,mafagafogigante/racket