[#444] Update Maven properties for Java compatibility

[swlodarski-sumoheavy]

Problem

Dependabot PRs upgrading dependencies (JUnit 6.x and Mockito 5.x) were causing test failures on Java 11 and earlier versions. The newer library versions require Java 12+ and are not backwards compatible.

Solution

Restructured the Maven configuration to support both modern and legacy Java versions:

Default Configuration (Java 12+):

• Java compiler source/target: 11
• JUnit: 6.1.0
• Mockito: 5.23.0

Java 11 and Earlier Profile:

• Added java11minus profile that automatically activates for JDK 11 and below
• Java compiler source/target: 1.8
• JUnit: 5.9.3 (compatible with Java 8-11)
• Mockito: 4.11.0 (compatible with Java 8-11)

Changes

• Updated default dependency versions to latest (Java 12+ compatible)
• Added Maven profile java11minus with activation condition (,12)
• Profile overrides dependency versions with Java 8-11 compatible versions

Impact

• Dependabot can now safely upgrade dependencies without breaking Java 11 builds
• Java 12+ users get the latest library versions
• Java 8-11 users continue to have a working build with compatible library versions
• No manual configuration required - Maven automatically selects the appropriate profile based on JDK version