Update maven-javadoc-plugin for Java 11 support

[kibertoad]

Resolves An error has occurred in Javadoc report generation: [ERROR] Exit code: 1 - javadoc: error - The code being documented uses modules but the packages defined in https://docs.oracle.com/javase/8/docs/api/ are in the unnamed module error that happens when using Java 11

• Read the contribution guidelines.
• If contributing template-only or documentation-only changes which will change sample output, build the project before.
• Run the shell script(s) under ./bin/ (or Windows batch scripts under.\bin\windows) to update Petstore samples related to your fix. This is important, as CI jobs will verify all generator outputs of your HEAD commit, and these must match the expectations made by your contribution. You only need to run ./bin/{LANG}-petstore.sh, ./bin/openapi3/{LANG}-petstore.sh if updating the code or mustache templates for a language ({LANG}) (e.g. php, ruby, python, etc).
• File the PR against the correct branch: master, 4.3.x, 5.0.x. Default: master.
• Copy the technical committee: @bbdouglas (2017/07) @sreeshas (2017/08) @jfiala (2017/08) @lukoyanov (2017/09) @cbornet (2017/09) @jeff9finger (2018/01) @karismann (2019/03) @Zomzog (2019/04) @lwlee2608 (2019/10) @bkabrda (2020/01)

[wing328]

Thanks for the PR but your commit (as shown in the Commits tab) is not linked to your Github account, which means this PR won't count as your contribution in https://github.com/OpenAPITools/openapi-generator/graphs/contributors.

Let me know if you need help fixing it.

Ref: https://github.com/OpenAPITools/openapi-generator/wiki/FAQ#how-can-i-update-commits-that-are-not-linked-to-my-github-account

[wing328]

Please have a look at the CircleCI errors when you've time: https://circleci.com/gh/OpenAPITools/openapi-generator/12780

[kibertoad]

@wing328 Thank you so much! Fixed both.

[wing328]

--- a/samples/client/petstore/java/rest-assured/pom.xml
+++ b/samples/client/petstore/java/rest-assured/pom.xml
@@ -144,7 +144,7 @@
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-javadoc-plugin</artifactId>
                 <version>3.1.1</version>
-                <configuration>
+                <configuration>s
                     <doclint>none</doclint>
                 </configuration>
                 <executions>
Perform git status
On branch pull/5361
Changes not staged for commit:
  (use "git add <file>..." to update what will be committed)
  (use "git checkout -- <file>..." to discard changes in working directory)

	modified:   samples/client/petstore/java/rest-assured/pom.xml

no changes added to commit (use "git add" and/or "git commit -a")
Please run 'bin/utils/ensure-up-to-date' locally and commit changes (UNCOMMITTED CHANGES ERROR)

Please update the Java rest-assured pom.xml when you've time.

[kibertoad]

My apologies; there was an unnecessary letter committed by accident; removed now.

[wing328]

I tested with different JDKs via https://travis-ci.org/OpenAPITools/openapi-generator/builds/652541701

JDK10 failed as expected without the workaround.

JDK13 is not yet supported.

Overall the result is good.

[kibertoad]

Much appreciated!

[wing328]

@kibertoad thanks for the PR, which has been included in the 4.3.0 release: https://twitter.com/oas_generator/status/1243455743937789952