Update to 6.0 RC2.

global.json

@@ -1,12 +1,12 @@
 {
   "tools": {
-    "dotnet": "6.0.100-preview.7.21379.14",
+    "dotnet": "6.0.100-rc.2.21505.57",
     "runtimes": {
       "dotnet": [
-        "6.0.0-preview.7.21377.19"
+        "6.0.0-rc.2.21480.5"
       ],
       "aspnetcore": [
-        "6.0.0-preview.7.21378.6"
+        "6.0.0-rc.2.21480.10"
       ]
     }
   },

test/E2ETest/TyeRunTests.cs

@@ -799,7 +799,8 @@ services:
         [Fact]
         public async Task IngressAllIPTest()
         {
-            await TestIngressIP($"'*'", GetLiveIPAddresses().FirstOrDefault());
+            // TODO: Possible null reference (the default case).
+            await TestIngressIP($"'*'", GetLiveIPAddresses().FirstOrDefault()!);
         }