Update google oauth user info endpoint to v3 dotnet#4684

Author: Tratcher

src/Security/Authentication/Google/src/GoogleDefaults.cs

@@ -34,8 +34,5 @@ public static class GoogleDefaults
     /// <summary>
     /// The Google endpoint that is used to gather additional user information.
     /// </summary>
-    /// <remarks>
-    /// For more details about this endpoint, see <see href="https://developers.google.com/apis-explorer/#search/oauth2/oauth2/v2/"/>.
-    /// </remarks>
-    public static readonly string UserInformationEndpoint = "https://www.googleapis.com/oauth2/v2/userinfo";
+    public static readonly string UserInformationEndpoint = "https://www.googleapis.com/oauth2/v3/userinfo";
 }

src/Security/Authentication/Google/src/GoogleOptions.cs

@@ -25,7 +25,8 @@ public GoogleOptions()
         Scope.Add("profile");
         Scope.Add("email");
 
-        ClaimActions.MapJsonKey(ClaimTypes.NameIdentifier, "id");
+        ClaimActions.MapJsonKey(ClaimTypes.NameIdentifier, "id"); // v2
+        ClaimActions.MapJsonKey(ClaimTypes.NameIdentifier, "sub"); // v3
         ClaimActions.MapJsonKey(ClaimTypes.Name, "name");
         ClaimActions.MapJsonKey(ClaimTypes.GivenName, "given_name");
         ClaimActions.MapJsonKey(ClaimTypes.Surname, "family_name");

src/Security/Authentication/test/GoogleTests.cs

@@ -1026,11 +1026,11 @@ private HttpMessageHandler CreateBackchannel()
                         refresh_token = "Test Refresh Token"
                     });
                 }
-                else if (req.RequestUri.GetComponents(UriComponents.SchemeAndServer | UriComponents.Path, UriFormat.UriEscaped) == "https://www.googleapis.com/oauth2/v2/userinfo")
+                else if (req.RequestUri.GetComponents(UriComponents.SchemeAndServer | UriComponents.Path, UriFormat.UriEscaped) == "https://www.googleapis.com/oauth2/v3/userinfo")
                 {
                     return ReturnJsonResponse(new
                     {
-                        id = "Test User ID",
+                        sub = "Test User ID",
                         name = "Test Name",
                         given_name = "Test Given Name",
                         family_name = "Test Family Name",