Updating to Unity 2020.1.8f1.

Packages/manifest.json

     "com.unity.collab-proxy": "1.3.9",
     "com.unity.ext.nunit": "1.0.0",
     "com.unity.ide.rider": "1.2.1",
-    "com.unity.ide.visualstudio": "2.0.2",
-    "com.unity.ide.vscode": "1.2.1",
+    "com.unity.ide.visualstudio": "2.0.3",
+    "com.unity.ide.vscode": "1.2.2",
-    "com.unity.purchasing": "2.1.0",
-    "com.unity.test-framework": "1.1.16",
+    "com.unity.purchasing": "2.1.1",
+    "com.unity.test-framework": "1.1.18",
     "com.unity.textmeshpro": "3.0.1",
     "com.unity.ugui": "1.0.0",
     "com.unity.xr.arcore": "4.0.8",

ProjectSettings/ProjectSettings.asset

   stadiaTargetFramerate: 0
   vulkanNumSwapchainBuffers: 3
   vulkanEnableSetSRGBWrite: 0
+  vulkanEnableLateAcquireNextImage: 0
   m_SupportedAspectRatios:
     4:3: 1
     5:4: 1

ProjectSettings/ProjectVersion.txt

-m_EditorVersion: 2020.1.6f1
-m_EditorVersionWithRevision: 2020.1.6f1 (fc477ca6df10)
+m_EditorVersion: 2020.1.8f1
+m_EditorVersionWithRevision: 2020.1.8f1 (22e8c0b0c3ec)