Update pom.xml

[ozkanpakdil]

fix #9523

PR checklist

• Read the contribution guidelines.
• Ran the shell script under ./bin/ to update Petstore sample so that CIs can verify the change. (For instance, only need to run ./bin/{LANG}-petstore.sh and ./bin/security/{LANG}-petstore.sh if updating the {LANG} (e.g. php, ruby, python, etc) code generator or {LANG} client's mustache templates). Windows batch files can be found in .\bin\windows\.
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Description of the PR

(details of the change, additional tests that have been done, reference to the issue for tracking, etc)

[tomaszdudek7]

I assume this PR is waiting for a merge. Could anyone do so?

It is 2020 already, JDK14 will be released soon, yet swagger-codegen is unusable on JDK11 by default.

(Of course if you add libraries manually it will be usable, it is not too userfriendly though.)

[HugoMario]

thanks @ozkanpakdil !!!