Adjust testComparatorLogSize for new name of the Jenkins job

I-build-4.23-github - the extra "-github" adds few bytes to the log.

Change-Id: I81c413bb6499faf501b93e7ea71ed632aacdf4c4
Reviewed-on: https://git.eclipse.org/r/c/platform/eclipse.platform.releng/+/190463
Tested-by: Alexander Kurtakov <akurtako@redhat.com>
Reviewed-by: Alexander Kurtakov <akurtako@redhat.com>
1 file changed