Fix: expand ~ in CCACHE_CONFIGPATH to actual home directory

- Use os.path.expanduser() to properly expand ~ in ccache config path
- Fixes FileNotFoundError on macOS builds in cibuildwheel
- Resolves CI failure in PR Cytnx-dev#711

Author: b95702041

tools/cibuildwheel_before_build.py

@@ -6,6 +6,9 @@
 tag = f'cp{sys.version_info.major}{sys.version_info.minor}'
 
 ccache_config_path = os.getenv('CCACHE_CONFIGPATH')
+
+# Expand ~ to actual home directory
+ccache_config_path = os.path.expanduser(ccache_config_path)
 if not ccache_config_path:
     raise RuntimeError('The CCACHE_CONFIGPATH environment variable must be set.')