Merge branch 'tiago/wasmer-upgrade' (#3308)

* origin/tiago/wasmer-upgrade:
  Changelog for #3308
  Avoid cloning tx env in some host fns
  Associate issues with TODOs
  Allow exclusive access to vm memory
  Pass mutable refs to wasm host env
  Restrict bounds on wasm memory
  Upgrade to wasmer 4.3.1
  Move all wasmer deps to workspace

.changelog/unreleased/improvements/3308-wasmer-upgrade.md

@@ -0,0 +1,4 @@
+- Upgrade `wasmer` vm to upstream version `4.3.1`,
+  moving away from the [forked code based on version
+  `2.3.0`](https://github.com/heliaxdev/wasmer/tree/255054f7f58b7b4a525f2fee6b9b86422d1ca15b).
+  ([\#3308](https://github.com/anoma/namada/pull/3308))