Update dependency org.springdoc:springdoc-openapi-ui to v1.5.6 (#84)

Co-authored-by: Renovate Bot <[email protected]>

Author: renovate[bot]

pom.xml

@@ -49,7 +49,7 @@
         <dependency>
             <groupId>org.springdoc</groupId>
             <artifactId>springdoc-openapi-ui</artifactId>
-            <version>1.5.3</version>
+            <version>1.5.6</version>
         </dependency>
 
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