Do not reuse test subject for workspace run task

Previously the test subject for the stagesSupport unit tests would reuse the
subject and resolver however this led to timing issues when parallel tests
were run. This commit changes the test to create new objects per test.

internal/provider/resource_tfe_workspace_run_task_test.go

@@ -14,13 +14,6 @@ import (
 )
 
 func TestTFEWorkspaceRunTask_stagesSupport(t *testing.T) {
-	resolver := &staticCapabilityResolver{}
-
-	subject := resourceWorkspaceRunTask{
-		config:       ConfiguredClient{Organization: "Mock", Client: &tfe.Client{}},
-		capabilities: resolver,
-	}
-
 	testCases := map[string]struct {
 		isCloud      bool
 		tfeVer       string
@@ -36,9 +29,15 @@ func TestTFEWorkspaceRunTask_stagesSupport(t *testing.T) {
 
 	for name, testCase := range testCases {
 		t.Run(name, func(t *testing.T) {
+			resolver := &staticCapabilityResolver{}
 			resolver.SetIsCloud(testCase.isCloud)
 			resolver.SetRemoteTFEVersion(testCase.tfeVer)
 
+			subject := resourceWorkspaceRunTask{
+				config:       ConfiguredClient{Organization: "Mock", Client: &tfe.Client{}},
+				capabilities: resolver,
+			}
+
 			actual := subject.supportsStagesProperty()
 			if actual != testCase.expectResult {
 				t.Fatalf("expected supportsStagesProperty to be %t, got %t", testCase.expectResult, actual)