Corrected test-framework package version to match Standards editor

Author: michalChrobot

testproject/Packages/manifest.json

@@ -12,7 +12,7 @@
     "com.unity.package-validation-suite": "0.49.0-preview",
     "com.unity.services.authentication": "3.5.2",
     "com.unity.services.multiplayer": "1.2.0",
-    "com.unity.test-framework": "1.6.0",
+    "com.unity.test-framework": "1.4.6",
     "com.unity.test-framework.performance": "3.2.0",
     "com.unity.timeline": "1.8.9",
     "com.unity.toolchain.win-x86_64-linux-x86_64": "2.0.11",