[liburing] update liburing port to version 2.5

[cmazakas]

• Changes comply with the maintainer guide
• SHA512s are updated for each updated download
• The "supports" clause reflects platforms that may be fixed by this new version
• Any fixed CI baseline entries are removed from that file.
• Any patches that are no longer applied are deleted from the port's directory.
• The version database is fixed by rerunning ./vcpkg x-add-version --all and committing the result.
• Only one version is added to each modified port's versions file.

[MonicaLiu0311]

The usage test passed on x64-linux (header files found):

The package liburing can be imported via CMake FindPkgConfig module:

    find_package(PkgConfig)
    pkg_check_modules(liburing REQUIRED IMPORTED_TARGET GLOBAL liburing>=2.0)

    target_link_libraries(main PRIVATE PkgConfig::liburing)