[New msys2-runtime-package version] msys2-runtime: backport follow-up fix for offline files

[github-actions]

msys2-runtime: backport follow-up fix for offline files

This integrates https://github.com/msys2/msys2-runtime/pull/210 into
MSYS2-packages.

Signed-off-by: Johannes Schindelin <johannes.schindelin@gmx.de>

msys2/MSYS2-packages@0def141

[dscho]

Like #4879, let's continue tracking progress here: git-for-windows/msys2-runtime#69