Updated cmake version for windows

[Kishan-Ved]

Fixes: #2561

For most of the recent PRs, the windows CI fails.

CMake Error at C:/Program Files/CMake/share/cmake-3.28/Modules/FindPackageHandleStandardArgs.cmake:230 (message):
  Could NOT find ZLIB (missing: ZLIB_LIBRARY ZLIB_INCLUDE_DIR)
Call Stack (most recent call first):
  C:/Program Files/CMake/share/cmake-3.28/Modules/FindPackageHandleStandardArgs.cmake:600 (_FPHSA_FAILURE_MESSAGE)
  C:/Program Files/CMake/share/cmake-3.28/Modules/FindZLIB.cmake:199 (FIND_PACKAGE_HANDLE_STANDARD_ARGS)
  cmake/FindStaticZLIB.cmake:7 (find_package)
  CMakeLists.txt:116 (find_package)


-- Configuring incomplete, errors occurred!

The error is related to the default CMake installed on Windows. I have updated windows cmake version to cmake=3.21.1 in the CI.yml file.

[certik]

Thank you!