Update dependencies

bukkit/pom.xml

@@ -31,6 +31,8 @@
 
     <properties>
         <nettyVersion>4.1.79.Final</nettyVersion>
+
+        <maven.compiler.release>8</maven.compiler.release>
     </properties>
 
     <parent>
@@ -167,13 +169,6 @@
             <version>${project.version}</version>
         </dependency>
 
-        <dependency>
-            <groupId>org.yaml</groupId>
-            <artifactId>snakeyaml</artifactId>
-            <version>1.33</version>
-            <scope>compile</scope>
-        </dependency>
-
         <!-- PaperSpigot API for correcting user cache usage -->
         <dependency>
             <groupId>io.papermc.paper</groupId>