fix(deps): update dependency org.openapitools:jackson-databind-nullable to v0.2.8 (#494)

Author: renovate[bot]

pom.xml

@@ -94,7 +94,7 @@
       <dependency>
         <groupId>org.openapitools</groupId>
         <artifactId>jackson-databind-nullable</artifactId>
-        <version>0.2.7</version>
+        <version>0.2.8</version>
       </dependency>
       <dependency>
         <groupId>io.camunda</groupId>