[sfml] update to 2.6.2

[jimwang118]

Updated port based on comments.
Fix openal not being found when statically compiled.

Error		CMake Error at E:/vcpkg/installed/x64-windows-static/share/sfml/SFMLConfigDependencies.cmake:42 (set_property):
  set_property could not find TARGET OpenAL.  Perhaps it has not yet been
  created.		E:/vcpkg/installed/x64-windows-static/share/sfml/SFMLConfigDependencies.cmake	42

• 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.

Usage test passed with x64-windows triplet.