This update isn't that necessary, but should be considered anyway as it
will do the following:
- Align this library, to that Kotlin version, which is already used by
most of this library's clients and libraries.
- Unblock the usage of the dependency analysis Gradle plugin for this
project.
- Prepares this project for the Kotlin 2+ major update.

This change is necessary because otherwise the build fails with the
below exception:

------------------------------------------------------------------------

> Task :aztec:compileDebugKotlin FAILED

FAILURE: Build failed with an exception.

* What went wrong:
Execution failed for task ':aztec:compileDebugKotlin'.
> Inconsistent JVM-target compatibility detected for tasks 'compileDebugJavaWithJavac' (1.8) and 'compileDebugKotlin' (17).

  Consider using JVM Toolchain: https://kotl.in/gradle/jvm/toolchain
  Learn more about JVM-target validation: https://kotl.in/gradle/jvm/
   target-validation

Co-authored-by: Wojciech Zięba <wojciech.zieba@protonmail.com>