Update dockstore-core version to 1.20.0-beta.3

Author: denis-yuen

pom.xml

@@ -26,7 +26,7 @@
     <properties>
         <github.url>scm:git:git@github.com:dockstore/swagger-java-quay-client.git</github.url>
         <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
-        <dockstore-core.version>1.20.0-beta.0</dockstore-core.version>
+        <dockstore-core.version>1.20.0-beta.3</dockstore-core.version>
         <maven-failsafe.version>2.21.0</maven-failsafe.version>
         <maven-surefire.version>2.21.0</maven-surefire.version>
         <javadocExecutable>${java.home}/bin/javadoc</javadocExecutable>