docs(changelog): version 1.6.4 [citest_skip]

[richm]

Update changelog and .README.html for version 1.6.4

Signed-off-by: Rich Megginson rmeggins@redhat.com

Summary by Sourcery

Document the 1.6.4 release in the changelog, including key bug fixes and CI-related updates.

Bug Fixes:

• Record fixes related to passing the bootable flag to snapshot management and checking the boot parameter in snapshot set creation.

CI:

• Note CI dependency bump for ansible-lint and adjustments to CI behavior and ansible-lint handling, including conditional skipping based on PR titles.

Documentation:

• Add a 1.6.4 entry to the changelog capturing recent bug fixes and CI changes.

[sourcery-ai]

Reviewer's guide (collapsed on small PRs)

Reviewer's Guide

Updates release documentation for version 1.6.4 by adding a new changelog entry describing bug fixes to snapshot boot flag handling and CI/ansible-lint related maintenance, and regenerates the HTML README accordingly.

File-Level Changes

Change	Details	Files
Add 1.6.4 release entry to the changelog documenting bug fixes and CI maintenance work.	Document two bug fixes related to passing the bootable flag correctly to snapshot management and checking the create_snapshot_set boot parameter. Document CI-related changes including ansible-lint version bump, conditional CI skipping when titles contain the citest_skip marker, and adjustments to ansible-lint handling of the .collection directory. Position the 1.6.4 section above the existing 1.6.3 section with the release date 2026-02-06.	CHANGELOG.md .README.html

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