update mappings and 21w40a, apparently.

gradle.properties

@@ -4,10 +4,10 @@ org.gradle.jvmargs=-Xmx1G
 # Fabric Properties
 	# check these on https://fabricmc.net/use
     # or better: https://modmuss50.me/fabric.html
-	minecraft_version=21w38a
-	yarn_mappings=21w38a+build.2
-	loader_version=0.11.7
-	fabric_version=0.40.4+1.18
+	minecraft_version=21w40a
+	yarn_mappings=21w40a+build.6
+	loader_version=0.12.1
+	fabric_version=0.40.8+1.18
 
 # Mod Properties
 	mod_version = 1.4.47