Add Release Note (feature): Comes with the MSYS2 runtime (Git for Windows flavor) based on [Cygwin v3.5.6](https://inbox.sourceware.org/cygwin-announce/20250126210031.2173904-1-corinna-cygwin@cygwin.com/) (Git for Windows skipped [v3.5.5](https://inbox.sourceware.org/cygwin-announce/20241220181956.2204526-1-corinna-cygwin@cygwin.com) because it failed to pass Git's test suite).

Add Release Note (feature): Comes with the MSYS2 runtime (Git for Windows flavor) based on [Cygwin v3.5.6](https://inbox.sourceware.org/cygwin-announce/20250126210031.2173904-1-corinna-cygwin@cygwin.com/) (Git for Windows skipped [v3.5.5](https://inbox.sourceware.org/cygwin-announce/20241220181956.2204526-1-corinna-cygwin@cygwin.com) because it failed to pass Git's test suite). #163