Update the wast crate dependency (#3464)

Pulls in a few minor fixes for stack overflows with module linking as
well as some updates to other various wasm proposals.

crates/wast/Cargo.toml

@@ -12,7 +12,7 @@ edition = "2018"
 [dependencies]
 anyhow = "1.0.19"
 wasmtime = { path = "../wasmtime", version = "0.30.0", default-features = false, features = ['cranelift'] }
-wast = "37.0.0"
+wast = "38.0.0"
 
 [badges]
 maintenance = { status = "actively-developed" }

crates/wast/src/wast.rs

@@ -349,7 +349,7 @@ impl<T> WastContext<T> {
                     )
                 }
             }
-            AssertUncaughtException { .. } => bail!("unimplemented assert_uncaught_exception"),
+            AssertException { .. } => bail!("unimplemented assert_exception"),
         }
 
         Ok(())