Ewout ter Hoeven ce0ad1d3ac
CI: Make macOS version explicit
Xcode 11.7 uses macOS 10.5, Xcode 12.5.1 and 13.1 uses macOS 11.
2021-10-25 19:34:37 +02:00
..
2021-10-25 19:34:37 +02:00