fix: set composite outputs on failure (#945)

fix: conclusion and outcome after error with failure condition
fix: continue-on-error doesn't work correctly for composite actions

pkg/runner/runner_test.go

@@ -122,6 +122,7 @@ func TestRunEvent(t *testing.T) {
 		{"testdata", "uses-composite", "push", "", platforms, ""},
 		{"testdata", "uses-composite-with-error", "push", "Job 'failing-composite-action' failed", platforms, ""},
 		{"testdata", "uses-nested-composite", "push", "", platforms, ""},
+		{"testdata", "composite-fail-with-output", "push", "", platforms, ""},
 		{"testdata", "issue-597", "push", "", platforms, ""},
 		{"testdata", "issue-598", "push", "", platforms, ""},
 		{"testdata", "env-and-path", "push", "", platforms, ""},