ci: disable ccache on macos build system test

.gitlab/ci/build.yml

@@ -206,13 +206,14 @@ pytest_build_system_macos:
   extends:
     - .test_build_system_template
     - .before_script:build:macos
-    - .after_script:build:macos:ccache:upload-when-fail
+    - .after_script:build:macos:upload-when-fail
     - .rules:build:macos
   tags:
     - macos_shell
   parallel: 3
   variables:
     PYENV_VERSION: "3.8"
+    CI_CCACHE_DISABLE: "1"  # ccache: error: Read-only file system
 
 build_docker:
   extends:

.gitlab/ci/common.yml

@@ -219,13 +219,12 @@ variables:
     - *setup_tools_and_idf_python_venv
     - fetch_submodules
 
-.after_script:build:macos:ccache:upload-when-fail:
+.after_script:build:macos:upload-when-fail:
   after_script:
     # macos is running shell executor, which means it would use
     # the system installed /usr/local/bin/python3 by default.
     # Ensure pyenv and PYENV_VERSION installed
     - eval "$(pyenv init -)"
-    - *show_ccache_statistics
     - *upload_failed_job_log_artifacts
 
 .before_script:build: