leshan-1.4.2

❗☠️❗ Affected by security issue❗☠️❗

Build artifacts are available on maven central.

Noteworthy

• Integration of Californium 2.7.4. (eclipse-californium/californium#2071)
• Upgrade library/plugin dependencies.

Change logs

b60b511: Rerun failing / unstable integration tests.
dcbe8f6: Upgrade gson library to 2.9.1
3e50468: Upgrade maven plugin
3a04ccc: Integration of Californium 2.7.4
184b50a: add requireUpperBoundDeps rules to maven-enforcer-plugin.