Release prep v8.0.0

[github-actions]

Automated release-prep through pdk-templates from commit 375f8d2.
Please verify before merging:

• last nightly run is green
• Changelog is readable and has no unlabeled pull requests
• Ensure the changelog version and metadata version match

[ekohl]

stdlib major versions are very painful for module authors. I don't think we should release them so often. This is a really trivial change and there's no effect on users so 👎 on doing a major version for this.

[alexjfisher]

stdlib major versions are very painful for module authors. I don't think we should release them so often. This is a really trivial change and there's no effect on users so 👎 on doing a major version for this.

Looks to be too late :(

[alexjfisher]

This is really annoying. Would it have been possible to at least release new versions of other puppetlabs modules to allow stdlib 8.0.0 before merging and releasing this? eg. concat?

This is blocking lots of other workflows now. eg. https://github.com/voxpupuli/puppet-gitlab_ci_runner/pull/114/checks?check_run_id=3420567928#step:6:334

[saz]

I'm seriously considering, to get rid of the upper version limit on stdlib. stdlib is used in soooo many modules, it takes days to weeks to get everything up-to-date and I don't want to add useless work with my modules.
Less major releases will help here... And marking breaking changes as such. Looking at the changelog, the last breaking change was with version 5...