Upgrading openapi produces errors in POM

[dgarijo]

For some reason, when upgrading the open api generator:

<dependency>
            <groupId>org.openapitools</groupId>
            <artifactId>openapi-generator</artifactId>
            <version>4.0.0</version>
            <!-- <version>4.3.1</version>-->
        </dependency>

from version 4.0.0 to 4.3.1 I get an error:
java.lang.ClassNotFoundException: com.fasterxml.jackson.core.TSFBuilder

I have not been able to find a solution so far (something may be wrong in the pom.xml). I tried to add the dependency separately without success. I tried this to validate the API with a more recent version, but it seems it doesn't detect the errors for missing schemas.