preloaded new version

Libraries/Versions/Release-Candidate/1.21-rc1.md

@@ -0,0 +1,6 @@
+---
+version-image-link: null
+not_finished: true
+server-jar: https://piston-data.mojang.com/v1/objects/902101d2fb0f968b9c0ddb8b8cff9afef23f72c7/server.jar
+translator: null
+---