Includes:
- Sign all artifacts, particularly 3rd party with CDT's PGP key
- Using maven version managed and updated by EF Webmasters
- Update to latest SnakeYAML
- Move some 3rd party dependencies to Import-Package (instead of
Require-Bundle)
In 56ee2c3bb1 I got github actions
working by using default GDB on GHA, but on Jenkins we should
continue to use CDT's pre-built version of GDB.
Part of #117
* Correct the requirements according to the latest target platform
* Move to requiring Java 17
* Enable the profile in the Jenkinsfile to verify it builds