GHA CI: disable security hardening flag

OpenSSL isn't compatible with `/guard:cf` flag so we omit it for now.
Related: openssl/openssl#22554

Closes #20479.
PR #20487.

.github/workflows/ci_windows.yaml

@@ -55,15 +55,13 @@ jobs:
  -Force `
  -ItemType File `
  -Path "${{ env.vcpkg_path }}/triplets_overlay/x64-windows-static-md-release.cmake"
+ # OpenSSL isn't compatible with `/guard:cf` flag so we omit it for now, see: https://github.com/openssl/openssl/issues/22554
  Add-Content `
  -Path "${{ env.vcpkg_path }}/triplets_overlay/x64-windows-static-md-release.cmake" `
  -Value @("set(VCPKG_TARGET_ARCHITECTURE x64)",
  "set(VCPKG_LIBRARY_LINKAGE static)",
  "set(VCPKG_CRT_LINKAGE dynamic)",
- "set(VCPKG_BUILD_TYPE release)",
- "set(VCPKG_C_FLAGS /guard:cf)",
- "set(VCPKG_CXX_FLAGS /guard:cf)",
- "set(VCPKG_LINKER_FLAGS /guard:cf)")
+ "set(VCPKG_BUILD_TYPE release)")
  # clear buildtrees after each package installation to reduce disk space requirements
  $packages = `
  "openssl:x64-windows-static-md-release",