Remove usage of deprecated alias, use library instead.

Test: ./gradlew tasks -Pandroidx.compose.multiplatformEnabled=true ->
      still works
Change-Id: I64472722cd992251aeec58d7b7a51241bd21144e
diff --git a/settings.gradle b/settings.gradle
index 3733667..ba9271d 100644
--- a/settings.gradle
+++ b/settings.gradle
@@ -85,7 +85,7 @@
             } else {
                 throw GradleException("Unsupported operating system $os")
             }
-            alias("skikoCurrentOs").to("org.jetbrains.skiko", currentOsArtifact).versionRef("skiko")
+            library("skikoCurrentOs", "org.jetbrains.skiko", currentOsArtifact).versionRef("skiko")
         }
     }
 }