Update CODEOWNERS with new vi.po reviewer (#2051)

Ignored unrelated failing tests.

Author: henrif75

.github/CODEOWNERS

@@ -15,6 +15,6 @@ po/pt-BR.po @rastringer @hugojacob @henrif75 @joaovicmendes @jcvicelli @azevedoa
 po/ru.po @istolga @baltuky @zvonden @dyeroshenko
 po/tr.po @alerque @enes1313
 po/uk.po @dyeroshenko
-po/vi.po @daivinhtran
+po/vi.po @daivinhtran @qu-ngx
 po/zh-CN.po @wnghl @anlunx @kongy @noahdragon @superwhd @emmali01 @SketchK @candysonya @AgainstEntropy
 po/zh-TW.po @edong @hueich @kuanhungchen @victorhsieh @mingyc @johnathan79717