astro 4.0.6

#9419 151bd429b Thanks @matthewp! - Prevent Partytown from hijacking history APIs
#9426 c01cc4e34 Thanks @alexnguyennz! - Fixes warning for external URL redirects
#9445 f963d07f2 Thanks @natemoo-re! - Upgrades Astro's compiler to a crash when sourcemaps try to map multibyte characters
#9126 6d2d0e279 Thanks @lilnasy! - Fixes an issue where error pages were not shown when trailingSlash was set to "always".
#9434 c01580a2c Thanks @ematipico! - Improves the error message when a middleware doesn't return a Response
#9433 fcc2fd5b0 Thanks @ematipico! - Correctly merge headers from the original response when an error page is rendered