Minecraft: Java Edition 1.21.3

Coming in hot with a hotfix, here's Minecraft 1.21.3 with a fix for a critical issue affecting Realms with Resource Packs enabled.

This version also fixes an upgrade problem with all Salmon turning small. This version will upgrade any small Salmon from previous versions into medium variants, including any from 1.21.2.

Fixed bugs in 1.21.3

• MC-277791 - Attempting to join a Realm with a Resource Pack enabled fails with an error
• MC-277779 - Salmon from 1.21.1 or before shrink when updating to 1.21.2