Bump pax.exam.version from 4.13.5 to 4.14.0

[dependabot]

Bumps pax.exam.version from 4.13.5 to 4.14.0.
Updates org.ops4j.pax.exam:pax-exam-container-native from 4.13.5 to 4.14.0

Updates org.ops4j.pax.exam:pax-exam-junit4 from 4.13.5 to 4.14.0

Updates org.ops4j.pax.exam:pax-exam-cm from 4.13.5 to 4.14.0

Updates org.ops4j.pax.exam:pax-exam-link-mvn from 4.13.5 to 4.14.0

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[garydgregory]

Keep around until we bump Java versions, eventually.

 class file has wrong version 55.0, should be 52.0

[ppkarwasz]

It is curious that projects that almost reached their end-of-life, suddenly bump the JRE requirements.

Do we need to run tests using JRE 8? Can't we just use --release 8 and rely on the quality of the compiler?

[garydgregory]

We do use the release flag if you run the build with an appropriate Java version. I run all my local release candidates with Java 17 for example and rely on the GitHub CI to prove that all LTS versions are OK. When I validate a RC that doesn't do that, I run lots of different builds using different Java versions.

You must test against Java 8 because you want to know that there are no surprises at runtime. It's not enough to compile with a flag.

We need to continue to monitor Java surveys to get an idea of when we would not loose too many users by requiring a more modern Java version.