update minigraph to fix weird gcc7.5 crash

1 job for mg-rebase in 80 minutes and 32 seconds (queued for 5 seconds)
Name Stage Failure
failed
test-job Test
make: *** [Makefile:143: evolver_test] Error 1

Running after_script
Running after script...
$ stopdocker || true

Cleaning up project directory and file based variables

ERROR: Job failed: command terminated with exit code 1