Update to 1.20.4 with new blueprint

Updated to include grass.

pom.xml

@@ -58,7 +58,7 @@
         <!-- Non-minecraft related dependencies -->
         <powermock.version>2.0.9</powermock.version>
         <!-- More visible way how to change dependency versions -->
-        <spigot.version>1.20.2-R0.1-SNAPSHOT</spigot.version>
+        <spigot.version>1.20.4-R0.1-SNAPSHOT</spigot.version>
         <bentobox.version>2.0.0-SNAPSHOT</bentobox.version>
         <!-- Revision variable removes warning about dynamic version -->
         <revision>${build.version}-SNAPSHOT</revision>

src/test/java/world/bentobox/acidisland/AcidIslandTest.java

@@ -1,6 +1,3 @@
-/**
- *
- */
 package world.bentobox.acidisland;
 
 import static org.junit.Assert.assertEquals;