More Scala3 fixes

tools/tck-inspection/src/main/scala/org/opencypher/tools/tck/inspection/diff/ElementaryDiff.scala

@@ -167,7 +167,7 @@ case class LCSbasedListDiff[A](before: List[A], after: List[A]) extends ListDiff
     case class Memo[I, K, O](f: I => O)(implicit ev: I => K) extends (I => O) {
       import scala.collection.mutable
       val cache: mutable.Map[K, O] = mutable.Map.empty[K, O]
-      override def apply(x: I): O = cache.getOrElseUpdate(x, f(x))
+      override def apply(x: I): O = cache.getOrElseUpdate(ev(x), f(x))
     }
 
     def lcs[A](a: List[(A, Int)], b: List[(A, Int)], eq: (A, A) => Boolean): List[(Int, Int)] = {

tools/tck-integrity-tests/pom.xml

@@ -109,7 +109,7 @@
 
         <dependency>
             <groupId>io.cucumber</groupId>
-            <artifactId>cucumber-scala_${scala.binary.version}</artifactId>
+            <artifactId>cucumber-scala_${scala2.binary.version}</artifactId>
             <version>${dep.cucumber.version}</version>
             <scope>test</scope>
         </dependency>

tools/tck-integrity-tests/src/test/scala/org/opencypher/tools/tck/ValidateScenarioTest.scala

@@ -45,7 +45,7 @@ class ValidateScenarioTest extends AnyFunSpecLike with Matchers {
     }).head
   }
 
-  private def fixture =
+  private def fixture: { val validator: ValidateScenario }  =
     new {
       val validator: ValidateScenario = new ValidateScenario() {}
     }