Add <pluginRepositories>

This fixes the versions plugin on machines without a populated
~/.m2/repository cache - the versions plugin seems to resolve the
version-rules dependency using the plugin repositories, not the standard
repositories.

pom.xml

@@ -77,6 +77,31 @@
       </snapshots>
     </repository>
   </repositories>
+  <pluginRepositories>
+    <pluginRepository>
+      <id>openrs2</id>
+      <name>OpenRS2</name>
+      <url>https://repo.openrs2.dev/repository/openrs2/</url>
+      <releases>
+        <enabled>true</enabled>
+        <updatePolicy>never</updatePolicy>
+      </releases>
+      <snapshots>
+        <enabled>false</enabled>
+      </snapshots>
+    </pluginRepository>
+    <pluginRepository>
+      <id>openrs2-snapshots</id>
+      <name>OpenRS2 Snapshots</name>
+      <url>https://repo.openrs2.dev/repository/openrs2-snapshots/</url>
+      <releases>
+        <enabled>false</enabled>
+      </releases>
+      <snapshots>
+        <enabled>true</enabled>
+      </snapshots>
+    </pluginRepository>
+  </pluginRepositories>
 
   <build>
     <pluginManagement>