Updated failing licence check and updated the gitignore

[John Byrne (johnbyrnejb)]

Description...

Checklist

• Documentation (if applicable)
• Changelog

[Antony Stubbs (astubbs)]

John Byrne (@johnbyrnejb) - the maintained fork took the other road on this: the mycila licence plugin was removed outright (astubbs#124) and replaced by a copyright-header gate that checks every file type against the fork's own policy (astubbs#338), so the failing check no longer exists to fix. The .gitignore additions are covered there too. Thank you for the patch; the fork's current release is v0.6.0.0, and the fork is where the work continues.

The coordinates changed with the fork - on Maven Central it is now:

<dependency>
    <groupId>bz.stub.parallelconsumer</groupId>
    <artifactId>parallel-consumer-core</artifactId>
    <version>0.6.0.0</version>
</dependency>

(parallel-consumer-vertx, parallel-consumer-reactor and parallel-consumer-mutiny likewise.) The Java package is bz.stub.parallelconsumer too, so imports change with it - one command rewrites them (GNU sed; on macOS use sed -i ''):

find . -name '*.java' -exec sed -i 's/io\.confluent\.parallelconsumer/bz.stub.parallelconsumer/g' {} +