Features in this release

Spack now supports Python 3.12 (#40155)

Bugfixes

• Improve escaping in Tcl module files (#38375)
• Make repo cache work on repositories with zero mtime (#39214)
• Ignore errors for newer, incompatible buildcache version (#40279)
• Print an error when git is required, but missing (#40254)
• Ensure missing build dependencies get installed when using spack install --overwrite (#40252)
• Fix an issue where Spack freezes when the build process unexpectedly exits (#39015)
• Fix a bug where installation failures cause an unrelated NameError to be thrown (#39017)
• Fix an issue where Spack package versions would be incorrectly derived from git tags (#39414)
• Fix a bug triggered when file locking fails internally (#39188)
• Prevent "spack external find" to error out when a directory cannot be accessed (#38755)
• Fix multiple performance regressions in environments (#38771)
• Add more ignored modules to pyproject.toml for mypy (#38769)