Update wasmtime to 0.29.0 (#9552)

* Start

* Move to ctx

* Make it compile for now

* More work

* Get rid off state-holder

* Use less Refcells

* 🤦

* Don't use RefCell

* Use names for parameters

* Fixes after merge

* Fixes after merge

* Review feedback

* FMT

substrate/client/executor/wasmtime/src/lib.rs

@@ -21,7 +21,6 @@ mod host;
 mod imports;
 mod instance_wrapper;
 mod runtime;
-mod state_holder;
 mod util;
 
 #[cfg(test)]