Pattern cannot be shared between threads safely

[m-kuzmin]

error[E0277]: `Rc<kuchiki::tree::Node>` cannot be shared between threads safely
  --> src/websites/gogoplay/parsers.rs:11:20
   |
11 |     static PARSER: OnceCell<Pattern> = Pattern::new(
   |                    ^^^^^^^^^^^^^^^^^ `Rc<kuchiki::tree::Node>` cannot be shared between threads safely
   |
   = help: within `easy_scraper::Pattern`, the trait `Sync` is not implemented for `Rc<kuchiki::tree::Node>`
   = note: required because it appears within the type `kuchiki::tree::NodeRef`
   = note: required because it appears within the type `easy_scraper::Pattern`
   = note: required because of the requirements on the impl of `Sync` for `once_cell::imp::OnceCell<easy_scraper::Pattern>`
   = note: required because it appears within the type `once_cell::sync::OnceCell<easy_scraper::Pattern>`
   = note: shared static variables must have a type that implements `Sync`

A thread safe version would be very usefull for keeping a static OnceCell to prevent recompiling the same pattern over and over again