fix(cmake): Correct Zlib-ng static link by separating link and install targets

[Chirimen-Jako]

When building minizip-ng as a static library (undefined BUILD_SHARED_LIBS) with Zlib-ng, the .vcxproj generated by CMake incorrectly referred to the dynamic library target (zlib) instead of the static library target (zlibstatic) in its linker settings.

This fix separates the targets in CMake:

• Use zlibstatic for target_link_libraries() to ensure the generated .vcxproj correctly references the static library.
• Use zlib for install(TARGETS...) to prevent CMake alias errors during installation (CI).