astro@5.12.4

#14031 e9206c1 Thanks @jp-knj! - Optimized the build pipeline for SVG images. Now, Astro doesn't reprocess images that have already been processed.
#14132 976879a Thanks @ematipico! - Fixes a bug where the property Astro.routePattern/context.routePattern wasn't updated when using a rewrite via middleware.
#14131 aafc4d7 Thanks @florian-lefebvre! - Fixes a case where an error occurring in a middleware would show the dev overlay instead of the custom 500.astro page
#14127 2309ada Thanks @florian-lefebvre! - Upgrades zod
#14134 186c201 Thanks @ascorbic! - Throws a more helpful error in dev if trying to use a server island without an adapter
#14129 3572d85 Thanks @ematipico! - Fixes a bug where the CSP headers was incorrectly added to a page when using an adapter.