Fix incorrect decimal comparison delta
Fix incorrect decimal comparison delta

The column has a precision of 4, so the delta should be 0.0001.

See https://github.com/rails/rails/issues/22325

theRealNG/paper_trail,ifeelgoods/paper_trail,jnstq/paper_trail,ifeelgoods/paper_trail,devonestes/paper_trail,airblade/paper_trail,airblade/paper_trail,theRealNG/paper_trail,jnstq/paper_trail