Add support for Scala 2.13

[petr-pokorny-absa]

This pull request adds support for Scala 2.13 across the project, updating documentation, build configuration, and dependency handling to ensure compatibility. It also updates some dependency versions and cleans up test and example configurations.

Scala 2.13 support and dependency updates:

• Updated project/Dependencies.scala to support Scala 2.13 in dependency resolution, including Spark, json4s, and Jackson modules. Added new version constants for Scala 2.13 and improved helper functions to handle three Scala versions. Also updated the absaCommons dependency version. [1] [2]
• Updated the README.md to document usage and dependency examples for Scala 2.13, including for core, S3 extension, json4s, and model modules. [1] [2] [3] [4]

Build and test configuration:

• Upgraded sbt version in project/build.properties from 1.5.5 to 1.9.9 for better Scala 2.13 support.
• Modified test regex patterns in BuildPropertiesSpec.scala and ControlMeasureBuilderTest.scala to accept Scala 2.13 artifact names. [1] [2] [3]
• Changed the Mockito mock maker configuration in test resources to use SubclassByteBuddyMockMaker instead of mock-maker-inline, likely for better compatibility.

Cleanup and simplification:

• Removed unused or redundant imports and dependencies from the example and test configurations, including dropping specs2 in favor of scalatest for examples. [1] [2] [3]

[github-actions]

JaCoCo code coverage report - scala:2.12.15

Overall Project	52.77%	🍏

There is no coverage information present for the Files changed

[github-actions]

JaCoCo code coverage report - scala:2.11.12

Overall Project	47.62%	🍏

There is no coverage information present for the Files changed

[github-actions]

JaCoCo code coverage report - scala:2.13.14

Overall Project	49.91%	🍏

There is no coverage information present for the Files changed

[lsulak]

So far I like the changes, it's pretty expected. Interested in that CI failures behind cache GH Action though. But I would start with this: version used here is extra old, it's v5. Just try to update it and let's see what happens:

https://github.com/coursier/cache-action/releases/tag/v8.1.0