Automate version bump in ipget --version

[lidel]

Version has to be bumped manually in three(!) places. .version.json should be the source of truth.

We should automate this, I just realized it has been causing a patch release for the second time :see_no_evil:

1. https://github.com/ipfs/ipget/pull/108
2. https://github.com/ipfs/ipget/pull/111#issuecomment-1164997288 → https://github.com/ipfs/ipget/pull/112