[ci] Update Cirrus to macOS Ventura and Xcode 14 (#6436)

.cirrus.yml

diff --git a/.cirrus.yml b/.cirrus.yml
index 7a8e31d..01de99c 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -64,7 +64,7 @@
 macos_arm_template: &MACOS_ARM_TEMPLATE
   << : *MACOS_TEMPLATE
   macos_instance:
-    image: ghcr.io/cirruslabs/macos-monterey-xcode:13.4
+    image: ghcr.io/cirruslabs/macos-ventura-xcode:14
 
 # Light-workload Linux tasks.
 # These use default machines, with fewer CPUs, to reduce pressure on the