Update webhook-go 2.2.0->2.8.0

[saz]

It's the latest release of webhook-go right now

Pull Request (PR) description

This Pull Request (PR) fixes the following issues

[kenyon]

https://github.com/voxpupuli/puppet-r10k/actions/runs/12266738858/job/34225474787?pr=665#step:7:313

Error: /Stage[main]/R10k::Install/Package[r10k]/ensure: change from 'absent' to 'present' failed: Execution of '/opt/puppetlabs/puppet/bin/gem install --no-document --no-document r10k' returned 1: ERROR:  Error installing r10k:
  	There are no versions of minitar (~> 1.0, >= 1.0.2) compatible with your Ruby & RubyGems. Maybe try installing an older version of the gem you're looking for?
  	minitar requires Ruby version >= 3.1. The current ruby version is 2.7.8.225.

[saz]

I guess we have to wait until Puppet 7 is EOL

[bastelfreak]

I'm hacking a fix in #666