Bump `listen` dependency version

[HugoKawamata]

The listen gem is dependent on rb-fsevent. However, the version of listen currently used here is from before Apple M1 chip support was added for rb-fsevent (see here), resulting in the following error when run on M1 macs:

Bumping this version should give the entangler M1 support.

[lulalala]

I wonder if this would have any effect. The latest listen gem's dependency remains unchanged:

gem.add_dependency 'rb-fsevent', '~> 0.10', '>= 0.10.3'

This is intentional, so you can bump rb-fsevent without bumping listen.