Update JDA to 5.0.0-beta.20 (#973)

Author: Nincodedo

ninbot-shared-parent/pom.xml

@@ -14,7 +14,7 @@
     <packaging>pom</packaging>
     <name>Ninbot Shared Parent Pom</name>
     <properties>
-        <JDA.version>5.0.0-beta.19</JDA.version>
+        <JDA.version>5.0.0-beta.20</JDA.version>
         <annotations.version>24.1.0</annotations.version>
         <archunit.version>1.2.0</archunit.version>
         <assertj-core.version>3.24.2</assertj-core.version>