Fix upstream nullability on entity equipment getters (#6519)

patches/api/0307-Add-Mob-lookAt-API.patch

@@ -5,10 +5,10 @@ Subject: [PATCH] Add Mob#lookAt API
 
 
 diff --git a/src/main/java/org/bukkit/entity/Mob.java b/src/main/java/org/bukkit/entity/Mob.java
-index d726453c041a980576312b6bee96a07837f37974..7d4ce660adb21e579e564796568945ee20f0ca59 100644
+index 55c5227a340e34621160afc9fae3ea843492881d..07bedbc15ba2463d3c629ae68d229286d4033f79 100644
 --- a/src/main/java/org/bukkit/entity/Mob.java
 +++ b/src/main/java/org/bukkit/entity/Mob.java
-@@ -23,6 +23,88 @@ public interface Mob extends LivingEntity, Lootable {
+@@ -26,6 +26,88 @@ public interface Mob extends LivingEntity, Lootable {
       * @return True if mob is exposed to daylight
       */
      boolean isInDaylight();
@@ -95,5 +95,5 @@ index d726453c041a980576312b6bee96a07837f37974..7d4ce660adb21e579e564796568945ee
 +     */
 +    int getMaxHeadPitch();
      // Paper end
- 
      /**
+      * Instructs this Mob to set the specified LivingEntity as its target.