Merge #27883: ci: Bump macOS cross task to ubuntu:jammy

fa70e85 ci: Bump macOS cross task to ubuntu:jammy (MarcoFalke)

Pull request description:

  It shouldn't matter what underlying image is used for the task, because the compiler is fully provided by `./depends/`.

  So just use the latest Ubuntu LTS, which is also most likely the OS that is used by people cross-compiling, if there are any at all.

ACKs for top commit:
  fanquake:
    ACK fa70e85
  hebasto:
    ACK fa70e85

Tree-SHA512: ab2831a8182ca382b8af37d5395c35b5341b8f55b0ce05f4787c627cbec306cefad66713ad053228862eeac01fb8b79be7e168c41e6ec4615fbcb4ef106125b8

.cirrus.yml

@@ -314,11 +314,11 @@ task:
     << : *CIRRUS_EPHEMERAL_WORKER_TEMPLATE_ENV
 
 task:
-  name: 'macOS 10.15 [gui, no tests] [focal]'
+  name: 'macOS 10.15 [gui, no tests] [jammy]'
   << : *CONTAINER_DEPENDS_TEMPLATE
   container:
     docker_arguments:
-      CI_IMAGE_NAME_TAG: ubuntu:focal
+      CI_IMAGE_NAME_TAG: ubuntu:jammy
       FILE_ENV: "./ci/test/00_setup_env_mac.sh"
   << : *CREDITS_TEMPLATE
   macos_sdk_cache:

ci/test/00_setup_env_mac.sh

@@ -7,7 +7,7 @@
 export LC_ALL=C.UTF-8
 
 export CONTAINER_NAME=ci_macos_cross
-export CI_IMAGE_NAME_TAG=ubuntu:20.04  # Check that Focal can cross-compile to macos
+export CI_IMAGE_NAME_TAG=ubuntu:22.04
 export HOST=x86_64-apple-darwin
 export PACKAGES="cmake libz-dev libtinfo5 python3-setuptools xorriso"
 export XCODE_VERSION=12.2