Upgrade some Maven plugins to reduce warnings

By: md_5 <git@md-5.net>

paper-server/pom.xml

@@ -277,7 +277,7 @@
             <plugin>
                 <groupId>net.md-5</groupId>
                 <artifactId>scriptus</artifactId>
-                <version>0.4.1</version>
+                <version>0.5.0</version>
                 <configuration>
                     <format>${bt.name}-Bukkit-%s</format>
                 </configuration>
@@ -348,7 +348,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-shade-plugin</artifactId>
-                <version>3.4.1</version>
+                <version>3.5.0</version>
                 <executions>
                     <execution>
                         <phase>package</phase>