jooby-open-api: fix classnotfound error after classpath cleanup

- swagger depends on this old/legacy API

Author: jknack

modules/jooby-openapi/pom.xml

@@ -33,6 +33,12 @@
       <groupId>jakarta.validation</groupId>
       <artifactId>jakarta.validation-api</artifactId>
     </dependency>
+    <!-- Swagger depends on this legacy API -->
+    <dependency>
+      <groupId>javax.xml.bind</groupId>
+      <artifactId>jaxb-api</artifactId>
+      <version>2.3.1</version>
+    </dependency>
     <!-- ASM -->
     <dependency>
       <groupId>org.ow2.asm</groupId>