update class names to official mappings

src/main/java/de/skate702/craftingkeys/manager/BrewingManager.java

@@ -1,7 +1,7 @@
 package de.skate702.craftingkeys.manager;
 
 import de.skate702.craftingkeys.util.Logger;
-import net.minecraft.inventory.container.Container;
+import net.minecraft.world.inventory.AbstractContainerMenu;
 
 /**
  * Manages a Brewing Stand GUI Inventory.
@@ -15,7 +15,7 @@ public class BrewingManager extends ContainerManager {
      *
      * @param container The container from a crafting GUI
      */
-    private BrewingManager(Container container) {
+    private BrewingManager(AbstractContainerMenu container) {
         super(container);
     }
 
@@ -25,7 +25,7 @@ public class BrewingManager extends ContainerManager {
      * @param container A container from a GUI
      * @return manager-singleton
      */
-    public static BrewingManager getInstance(Container container) {
+    public static BrewingManager getInstance(AbstractContainerMenu container) {
         if (instance == null) {
             instance = new BrewingManager(container);
         } else {