migrate to java 21

CommandWhitelistBukkit/pom.xml

@@ -15,7 +15,7 @@
 
     <description>You decide what commands players can use or tab complete on your server!</description>
     <properties>
-        <java.version>1.8</java.version>
+        <java.version>21</java.version>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     </properties>
     <url>youhavetrouble.me</url>
@@ -51,7 +51,7 @@
                                 </relocation>
                                 <relocation>
                                     <pattern>net.kyori</pattern>
-                                    <shadedPattern>eu.endermite</shadedPattern>
+                                    <shadedPattern>eu.endermite.net.kyori</shadedPattern>
                                 </relocation>
                             </relocations>
                         </configuration>
@@ -86,7 +86,7 @@
         <dependency>
             <groupId>io.papermc.paper</groupId>
             <artifactId>paper-api</artifactId>
-            <version>1.19.4-R0.1-SNAPSHOT</version>
+            <version>1.21.8-R0.1-SNAPSHOT</version>
             <scope>provided</scope>
         </dependency>
         <dependency>