astro 1.4.5

#4981 1f890b336 Thanks @matthewp! - Ensure dynamic tags have their slot instructions yielded
#4886 61d26f335 Thanks @yuhang-dong! - Fix: import.meta.env.BASE_URL will be '/' in client loaded component on dev mode
#4973 c733d4fb8 Thanks @bluwy! - Support Astro.slots.render for mdx
#4918 a6bb2694b Thanks @bluwy! - Refactor hydration path handling
#4977 4f73b98ae Thanks @tony-sull! - Fixes a bug that logged route cache warnings in astro dev
#4887 37cb2fc02 Thanks @Calvin-LL! - fix object styles not escaped
#4990 8f9791d84 Thanks @matthewp! - Upgrade Astro compiler to 0.26.0