nix: Update hash for rust-cbindgen 0.6.8 (#1793)
nix: Update hash for rust-cbindgen 0.6.8 (#1793)


La0/mozilla-relengapi,mozilla-releng/services,La0/mozilla-relengapi,mozilla-releng/services,mozilla-releng/services,mozilla-releng/services,La0/mozilla-relengapi,La0/mozilla-relengapi