chore(deps): update upm project dependency com.unity.services.authentication to v3

Author: unity-renovate[bot]

testproject/Packages/manifest.json

@@ -8,7 +8,7 @@
     "com.unity.mathematics": "1.2.6",
     "com.unity.netcode.gameobjects": "file:../../com.unity.netcode.gameobjects",
     "com.unity.package-validation-suite": "0.49.0-preview",
-    "com.unity.services.authentication": "2.4.0",
+    "com.unity.services.authentication": "3.4.0",
     "com.unity.services.core": "1.8.1",
     "com.unity.services.relay": "1.0.5",
     "com.unity.test-framework": "1.3.3",

testproject/ProjectSettings/ProjectVersion.txt

@@ -1,2 +1 @@
-m_EditorVersion: 2020.3.40f1
-m_EditorVersionWithRevision: 2020.3.40f1 (ba48d4efcef1)
+m_EditorVersion: 2021.3.0a1