Release prep v1.4.0

[github-actions[bot]]

Automated release-prep through pdk-templates from commit c00530abac545f67a515dd47039076682fe40b1e. Please verify before merging:

• [ ] last nightly run is green (see comment below)
• [x] Changelog is readable and has no unlabeled pull requests
• [x] Ensure the changelog version and metadata version match

[joshcooper]

For some reason the checks didn't kick off. I closed and reopened and now they're running

[joshcooper]

We don't use nightly.yml but we did run augeas_core 1.3.0-0219-c00530ab against:

• [x] last passing puppet-agent
• [x] nightly puppet gems