Reverted transport update as this is major update

Author: michalChrobot

com.unity.netcode.gameobjects/CHANGELOG.md

@@ -13,7 +13,6 @@ Additional documentation and release notes are available at [Multiplayer Documen
 
 ### Changed
 - Minimal supported editor was updated to 6000.0 as 2022.3 is now out of support
-- Updated transport dependency to latest 2.7.3
 
 ### Deprecated
 

com.unity.netcode.gameobjects/package.json

@@ -6,7 +6,7 @@
     "unity": "6000.0",
     "dependencies": {
         "com.unity.nuget.mono-cecil": "1.11.6",
-        "com.unity.transport": "2.7.3"
+        "com.unity.transport": "1.5.0"
     },
     "samples": [
         {