Fix maven build process

.gitignore

@@ -1,6 +1,6 @@
 ### Java template
-target/classes/io/github/archemedes/knockoutplus/corpse/CorpseRegistry.class
 /.idea
+/*.iml
 /libs
 
 # Mobile Tools for Java (J2ME)

pom.xml

@@ -16,17 +16,13 @@
         </repository>
         <!-- WorldEdit / WorldGuard -->
         <repository>
-        <id>sk89q-repo</id>
+            <id>enginehub-repo</id>
-        <url>https://maven.sk89q.com/repo/</url>
+            <url>https://maven.enginehub.org/repo/</url>
         </repository>
         <!-- PlotSquared -->
         <repository>
-        <id>intellectualsites releases</id>
+            <id>papermc</id>
-        <url>https://mvn.intellectualsites.com/content/repositories/releases/</url>
+            <url>https://repo.papermc.io/repository/maven-public/</url>
-    </repository>
-    <repository>
-        <id>intellectualsites snapshots</id>
-        <url>https://mvn.intellectualsites.com/content/repositories/snapshots/</url>
         </repository>
         <repository> <!-- needed due to missing dependency on PlotSquared for adventure-text-minimessage -->
             <id>sonatype-oss-snapshots</id>
@@ -34,59 +30,70 @@
         </repository>
     </repositories>
 
+    <dependencyManagement>
+        <dependencies>
+            <dependency>
+                <groupId>com.intellectualsites.bom</groupId>
+                <artifactId>bom-newest</artifactId>
+                <version>1.47</version>
+                <scope>import</scope>
+                <type>pom</type>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
     <dependencies>
         <!-- Spigot -->
         <dependency>
             <groupId>org.spigotmc</groupId>
             <artifactId>spigot-api</artifactId>
-        <version>1.18-R0.1-SNAPSHOT</version>
+            <version>1.21-R0.1-SNAPSHOT</version>
             <scope>provided</scope>
         </dependency>
         <!-- WorldGuard -->
         <dependency>
             <groupId>com.sk89q.worldguard</groupId>
             <artifactId>worldguard-bukkit</artifactId>
-        <version>7.0.7-SNAPSHOT</version>
+            <version>7.0.10</version>
             <scope>provided</scope>
         </dependency>
         <!-- WorldEdit -->
         <dependency>
             <groupId>com.sk89q.worldedit</groupId>
             <artifactId>worldedit-core</artifactId>
-        <version>7.3.0-SNAPSHOT</version>
+            <version>7.3.5</version>
             <scope>provided</scope>
         </dependency>
         <!-- PlotSquared Core API -->
         <dependency>
-        <groupId>com.plotsquared</groupId>
+            <groupId>com.intellectualsites.plotsquared</groupId>
-        <artifactId>PlotSquared-Core</artifactId>
+            <artifactId>plotsquared-core</artifactId>
-        <version>6.1.3</version>
+            <scope>provided</scope>
         </dependency>
     </dependencies>
 
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
     <build>
-    <defaultGoal>clean package install</defaultGoal>
-    <sourceDirectory>src/main/java</sourceDirectory>
         <finalName>${project.name}-${project.version}</finalName>
-    <resources>
-        <resource>
-            <directory>src/main/resources</directory>
-            <filtering>true</filtering>
-            <includes>
-                <include>**/*.yml</include>
-            </includes>
-        </resource>
-    </resources>
         <plugins>
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.13.0</version>
                 <configuration>
-                <source>16</source>
+                    <release>17</release>
-                <target>16</target>
                 </configuration>
             </plugin>
         </plugins>
+        <resources>
+            <resource>
+                <directory>src/main/resources</directory>
+                <filtering>true</filtering>
+            </resource>
+        </resources>
     </build>
 
 </project>

src/main/java/com/gmail/st3venau/plugins/armorstandtools/ArmorStandCmd.java

@@ -6,7 +6,6 @@ import org.bukkit.Bukkit;
 import org.bukkit.command.CommandException;
 import org.bukkit.entity.ArmorStand;
 import org.bukkit.entity.Player;
-import org.jetbrains.annotations.NotNull;
 
 import java.io.Serializable;
 
@@ -103,7 +102,7 @@ public record ArmorStandCmd(String command, CommandType type, Integer priority,
     }
 
     @Override
-    public int compareTo(@NotNull ArmorStandCmd o) {
+    public int compareTo(ArmorStandCmd o) {
         return Integer.compare(priority, o.priority);
     }
 }