ci: Update to latest intel based mac runners

[sjanc]

macos-13 runner is being deprecated.

[sjanc]

#AutoPTS run mynewt GAP/ADV/BV-01-C

[codecoup-tester]

Scheduled PR https://github.com/apache/mynewt-nimble/pull/2132#issuecomment-3531431750, board: nrf52, estimated start time: 08:59:57, test case count: 1, estimated duration: 0:10:27

Test cases to be run

GAP/ADV/BV-01-C

[codecoup-tester]

AutoPTS Bot results:

Failed tests (1)

GAP GAP/ADV/BV-01-C BUILD_OR_FLASH ERROR

[sjanc]

#AutoPTS run mynewt GAP/ADV/BV-01-C

[codecoup-tester]

Scheduled PR https://github.com/apache/mynewt-nimble/pull/2132#issuecomment-3531904485, board: nrf52, estimated start time: 10:57:54, test case count: 1, estimated duration: 0:10:27

Test cases to be run

GAP/ADV/BV-01-C

[codecoup-tester]

AutoPTS Bot results: No failed test found.

Successful tests (1)

GAP GAP/ADV/BV-01-C PASS