Bump antora from 3.2.0-alpha.6 to 3.2.0-alpha.8 in /docs

[dependabot]

Bumps antora from 3.2.0-alpha.6 to 3.2.0-alpha.8.

Changelog

Sourced from antora's changelog.

== 3.2.0-alpha.8 (2024-12-05)

=== Changed

• content-aggregator: Don't apply camelCase transformation to descendant keys of the ext key in component version descriptor (#1145)
• content-aggregator: Include - segment in edit URL for file hosted on gitlab.com to avoid redirct
• Apply code formatting changes to comply with biome toolchain (#1157)
• Add directory property to repository entry in package files
• Upgrade @​antora/expand-path-helper to 3.0.x (content-aggregator, ui-loader, file-publisher, logger)
• Upgrade @​antora/user-require-helper to 3.0.x (content-aggregator, asciidoc-loader, file-publisher, site-generator, cli)

=== Fixed

• content-aggregator: Gracefully handle case when value of nav key in component version descriptor is not an array (#1147)
• page-composer: Use navtitle as content of orphan breadcrumb entry instead of doctitle (aka page title) (#1159)
• site-generator: Fully support static register method on Class or Object exported by extension (#1158)

== 3.2.0-alpha.7 (2024-12-05)

Release failed.

Commits

• f991725 release 3.2.0-alpha.8
• b352061 prepare branch for development [skip ci]
• 871fb8c release 3.2.0-alpha.7
• dc7ff33 update what's new page in preperation for upcoming 3.2.0-alpha.7 release
• e988b22 fix broken internal reference on images page
• d31df57 add section to images page to document how to make a link to an image
• 56e7916 improve introduction of images and attachment by mentioning use of xref macro
• 89c8b3a mention that xref can be used to create a link to an image
• a869425 fix issue reference in CHANGELOG [skip ci]
• 1bffcb1 allow coverage npm script to be run per package and document how to invoke it...
• Additional commits viewable in compare view

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