community/wasm-bindgen: upgrade to 0.2.93

Diff from previous version (no proper patchnotes available): https://github.com/rustwasm/wasm-bindgen/compare/0.2.92...0.2.93

I've removed the patch added by !66477 (merged) as the libc dependency in the Cargo.lock in archlinux' packaging sources has been updated, making the patch redundant.