preloaded new version

Project/libraries/Versions/Pre-Release/1.21/1.21.6-pre4.md

@@ -0,0 +1,7 @@
+---
+version-image-link: null
+not_finished: true
+server-jar: https://piston-data.mojang.com/v1/objects/650e7d088d8b243a9159641cef75303587ba36bd/server.jar
+translator: null
+cats: ['1.21','1.21.6']
+---