release: Update actions file.

Author: Aetopia

.github/workflows/build.yml

@@ -28,6 +28,7 @@ jobs:
       - name: Install & setup MSYS2 environment.
         uses: msys2/setup-msys2@v2
         with: 
+          msystem: UCRT64
           update: true
           install: git mingw-w64-ucrt-x86_64-gcc mingw-w64-ucrt-x86_64-MinHook