1.28.0 🚀 (Enhancement) feat: update semantic conventions to 1.28.0 #5181 @trentm 📚 (Refine Doc) chore: Improve documentation on entry-points (top-level and "incubating") and on deprecations. #5025 @trentm 🏠 (Internal) chore: Update the comments of some deprecated constants to point to the currently relevant replacement constant, if any. #5160 @trentm chore: Minor improvements to formatting of comments. #5100 @trentm