Update fabric-loop, explicitly set archivesBaseName to 'luckperms' (#2880)

fabric/build.gradle

@@ -2,9 +2,11 @@ import net.fabricmc.loom.task.RemapJarTask
 
 plugins {
     id 'com.github.johnrengelman.shadow' version '4.0.1'
-    id 'fabric-loom' version '0.5-SNAPSHOT'
+    id 'fabric-loom' version '0.6-SNAPSHOT'
 }
 
+archivesBaseName = 'luckperms'
+
 repositories {
     maven { url 'https://maven.fabricmc.net/' }
     mavenLocal()

fabric/src/main/resources/fabric.mod.json

@@ -27,7 +27,7 @@
     ]
   },
   "mixins": [
-    "mixins.luckperms.json"
+    "luckperms.mixins.json"
   ],
   "depends": {
     "fabricloader": ">=0.9.0",