Revert "windows cmake build in debug mode"

This reverts commit 0b6dff5.

Author: kherud

.github/build.bat

@@ -2,6 +2,6 @@
 
 mkdir build
 cmake -Bbuild %*
-cmake --build build --config Debug
+cmake --build build --config Release
 
-if errorlevel 1 exit /b %ERRORLEVEL%
+if errorlevel 1 exit /b %ERRORLEVEL%