Log Message:
appstream: updated to 1.0.4

Version 1.0.4

Features:
 * bundle: Add AS_BUNDLE_KIND_SYSUPDATE
 * desktop-style-ids: Add dark support for Plasma
 * desktop-style-ids: add pantheon:dark
 * qt: Expose branding color
 * sysinfo: Add memory size detection support for Illumos and Solaris
 * sysinfo: Add memory size detection support for GNU/Hurd
 * validator: Don't fail validation if a snapshot release is missing a time

Specification:
 * docs: Note that support for some legacy path was dropped in 1.0
 * docs: Update fd.o spec URLs
 * docs: Better explain desktop applications
 * Update ESRA website URL

Bugfixes:
 * validator: Make sure we read an initialised variable
 * qt: Specify utc as the dates' timezone
 * tests: Ignore some tests on Windows
 * sysinfo: make uname() usage POSIX compliant
 * Only emit legacy compat tag developer_name for catalog data
 * compose: Allow file discovery even in symlinked directories
 * Avoid a race condition when loading GResource data
 * validator: Mention length limit in summary length warning message
 * utils: Explicitly set permissions on installed metadata files
 * as-vercmp: Fix gtkdoc to not start with '>'

Miscellaneous:
 * desktop-style-ids: Remove Endless
 * ci: Fix FreeBSD build (update `py-gi-docgen`)
 * ci: Update to Ubuntu 24.04 for Debian Testing builds
 * utils: Assume 64px as size when installing an icon tarball of unknown size