common-workflow-language/cwlviewer: cwlviewer v1.4.1: SpringBoot 2.6.1

This version started using SpringBoot 2.6.1, and had other small code changes, and many dependencies upgraded.

Smaller changes:

Convert label-schema to OCI annotations #361 @mr-c

Misc fixes:

Added plug-in configuration for avoiding any usages of outdated log4j2 versions, some of which are subject to the RCE CVE-2021-44228 ("Log4Shell") and CVE-2021-45046 20c58b9d782802de04cdce3e975198940900a504 @mr-c

Dependencies upgrade:

Upgrade to SpringBoot 2.6.1 #284 @mr-c @etzanis @kinow
update pip & setuptools #364 @mr-c
Dependency updates, courtesy of @dependabot-bot
    Bump jackson-core from 2.12.5 to 2.13.0 #358
    Bump jsonld-java from 0.13.3 to 0.13.4 #365
    Bump snakeyaml from 1.29 to 1.30 #366
    Bump hibernate-validator from 6.0.13.Final to 6.0.20.Final #370
    Bump jena-core from 4.3.1 to 4.3.2 #372
    Bump hibernate-validator from 6.0.20.Final to 7.0.1.Final #373
    Bump jackson-core from 2.13.0 to 2.13.1 #374