update quickpick.vim to 968f00787c1 (Fix an invalid window id error in Neovim) (#1261)
update quickpick.vim to 968f00787c1 (Fix an invalid window id error in Neovim) (#1261)

Refer to https://github.com/prabirshrestha/quickpick.vim/pull/31
prabirshrestha/vim-lsp,prabirshrestha/vim-lsp