[New cygwin version] cygwin-3.6.10

[github-actions]

Cygwin 3.6.10 release

https://github.com/cygwin/cygwin/releases/tag/cygwin-3.6.10

[dscho]

MSYS2 PR: msys2/msys2-runtime#347

[dscho]

Git for Windows PR: git-for-windows/msys2-runtime#137