Build Awesome (11ty) v4.0.0-alpha.10

# To install, choose one of these:
npm install @11ty/eleventy@4.0.0-alpha.10 --save-exact
npm install @awesome.me/buildawesome@4.0.0-alpha.10 --save-exact

Full v4 Milestone: https://github.com/11ty/buildawesome/milestone/46?closed=1
v4.0.0-alpha.10 Changelog: v4.0.0-alpha.9...v4.0.0-alpha.10

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• #4310 Hotfix for regression in layout cache invalidation (regressed in f60a2a8 via #4294)