Use workspace inheritance for some more dependencies (#5349)

Deduplicate some dependency directives through `[workspace.dependencies]`

crates/wasi-nn/Cargo.toml

@@ -18,7 +18,7 @@ wiggle = { workspace = true }
 
 # These dependencies are necessary for the wasi-nn implementation:
 openvino = { version = "0.4.2", features = ["runtime-linking"] }
-thiserror = "1.0"
+thiserror = { workspace = true }
 
 [build-dependencies]
 walkdir = "2.3"