build: Introduce the Kotest property testing dependency

See [1]. Going forward, as an experiment some tests will be converted to
use arbitrary (reflective) values [2] where no fixed empty / dummy values
are strictly needed, to emphasize the invariance on those inputs.

[1]: https://kotest.io/docs/proptest/property-based-testing.html
[2]: https://kotest.io/docs/proptest/reflective-arbs.html

Signed-off-by: Sebastian Schuberth <sebastian@doubleopen.org>

Author: sschuberth

buildSrc/src/main/kotlin/ort-kotlin-conventions.gradle.kts

@@ -61,6 +61,7 @@ testing {
                 implementation(project(":utils:test-utils"))
 
                 implementation(libs.kotest.assertions.core)
+                implementation(libs.kotest.property)
                 implementation(libs.kotest.runner.junit5)
             }
         }

gradle/libs.versions.toml

@@ -133,6 +133,7 @@ kotest-extensions = { module = "io.kotest:kotest-extensions", version.ref = "kot
 kotest-extensions-junitXml = { module = "io.kotest:kotest-extensions-junitxml", version.ref = "kotest" }
 kotest-framework-datatest = { module = "io.kotest:kotest-framework-datatest", version.ref = "kotest" }
 kotest-framework-engine = { module = "io.kotest:kotest-framework-engine", version.ref = "kotest" }
+kotest-property = { module = "io.kotest:kotest-property", version.ref = "kotest" }
 kotest-runner-junit5 = { module = "io.kotest:kotest-runner-junit5", version.ref = "kotest" }
 kotlinpoet = { module = "com.squareup:kotlinpoet", version.ref = "kotlinPoet"}
 kotlinpoet-ksp = { module = "com.squareup:kotlinpoet-ksp", version.ref = "kotlinPoet"}