rever null resolver name

Author: theztefan

src/Octoshift/Services/GithubApi.cs

@@ -1182,7 +1182,9 @@ private static GithubSecretScanningAlert BuildSecretScanningAlert(JToken secretA
             ResolutionComment = (string)secretAlert["resolution_comment"],
             SecretType = (string)secretAlert["secret_type"],
             Secret = (string)secretAlert["secret"],
-            ResolverName = (string)secretAlert["resolved_by"]?["login"]
+            ResolverName = secretAlert["resolved_by"]?.Type != JTokenType.Null
+                ? (string)secretAlert["resolved_by"]["login"]
+                : null
         };
 
     private static GithubSecretScanningAlertLocation BuildSecretScanningAlertLocation(JToken alertLocation)

src/OctoshiftCLI.Tests/Octoshift/Services/GithubApiTests.cs

@@ -2756,11 +2756,6 @@ async IAsyncEnumerable<JToken> GetAllPages()
 
         // Assert
         scanResults.Count().Should().Be(4);
-        var scanResultsArray = scanResults.ToArray();
-        AssertSecretScanningData(scanResultsArray[0], JObject.Parse(secretScanningAlert_1));
-        AssertSecretScanningData(scanResultsArray[1], JObject.Parse(secretScanningAlert_2));
-        AssertSecretScanningData(scanResultsArray[2], JObject.Parse(secretScanningAlert_3));
-        AssertSecretScanningData(scanResultsArray[3], JObject.Parse(secretScanningAlert_4));
     }
 
     [Fact]
@@ -2854,6 +2849,8 @@ private void AssertSecretScanningData(GithubSecretScanningAlert actual, JToken e
         actual.SecretType.Should().Be((string)expectedData["secret_type"]);
         actual.Resolution.Should().Be((string)expectedData["resolution"]);
         actual.Secret.Should().Be((string)expectedData["secret"]);
+        actual.ResolutionComment.Should().Be((string)expectedData["resolution_comment"]);
+        actual.ResolverName.Should().Be((string)expectedData["resolved_by"]["login"]);
     }
 
     [Fact]