fix(execution): don't exclude invoked targets from skipping (#1414)

Author: matkoch

source/Nuke.Build.Tests/BuildExecutorTest.cs

@@ -36,21 +36,12 @@ public void TestDefault()
     }
 
     [Fact]
-    public void TestParameterSkipped_AllWithoutInvoked()
+    public void TestParameterSkipped_All()
     {
         ExecuteBuild(skippedTargets: new ExecutableTarget[0]);
         AssertSkipped(A, B, C);
     }
 
-    [Fact]
-    public void TestParameterSkipped_AllWithInvoked()
-    {
-        C.Invoked = true;
-        ExecuteBuild(skippedTargets: new ExecutableTarget[0]);
-        AssertSucceeded(C);
-        AssertSkipped(A, B);
-    }
-
     [Fact]
     public void TestParameterSkipped_Single()
     {

source/Nuke.Build/Execution/BuildExecutor.cs

@@ -181,7 +181,7 @@ string Format(string condition)
 
     private static void MarkTargetSkipped(INukeBuild build, ExecutableTarget target, string reason = null)
     {
-        if (target.Invoked || target.Status != ExecutionStatus.Scheduled)
+        if (target.Status != ExecutionStatus.Scheduled)
             return;
 
         target.Status = ExecutionStatus.Skipped;