Fix flaky aliasing test (#2644)

The test occasionally fails with complaints about concurrent map writes.
We will just run it sequentially as before, that should fix the issue.


https://github.com/pulumi/pulumi-terraform-bridge/actions/runs/11938863967/attempts/1

pkg/tfbridge/tokens_test.go

@@ -558,8 +558,7 @@ func TestTokenAliasing(t *testing.T) { //nolint:paralleltest
 	}
 }
 
-func TestTokenAliasing1(t *testing.T) {
-	t.Parallel()
+func TestTokenAliasing1(t *testing.T) { //nolint:paralleltest
 	testTokenAliasing(t)
 }