Revert "Bump com.github.TechFortress:GriefPrevention from 16.18.1 to 18.0.0 (…" (#33)

This reverts commit a14ddc1.

Author: remdui

pom.xml

@@ -323,7 +323,7 @@
         <dependency>
             <groupId>com.github.TechFortress</groupId>
             <artifactId>GriefPrevention</artifactId>
-            <version>18.0.0</version>
+            <version>16.18.1</version>
             <scope>provided</scope>
         </dependency>
         <dependency>