Add macOS 27 insignificant test configurations


[CI Platforms]

Change-Id: I83441df6570f58f21f528ed9de361aa9628fc0b2
Reviewed-by: Aku Pietikäinen <aku.pietikainen@qt.io>
Reviewed-by: Morten Johan Sørvig <morten.sorvig@qt.io>
commit5e77a0af5c182a74da22f7d770058f755c43ca27
parentda1126957fd524df9860c1d5517aecf488159896
authorTor Arne Vestbø <tor.arne.vestbo@qt.io>
committerTor Arne Vestbø <tor.arne.vestbo@qt.io>
commit timeSun, 4 Oct 2026 15:01:31 +0000