env: upgrade wasmtime version

Wasmtime v9.0.1 fixes an issue discovered during testing of the
standard library.

For #59583

Change-Id: Idb4b2ca26104983d0ee65191c39bae195196b472
Reviewed-on: https://go-review.googlesource.com/c/build/+/496920
Run-TryBot: Johan Brandhorst-Satzkorn <johan.brandhorst@gmail.com>
Reviewed-by: Heschi Kreinick <heschi@google.com>
Reviewed-by: Dmitri Shuralyov <dmitshur@google.com>
TryBot-Result: Gopher Robot <gobot@golang.org>
Reviewed-by: Dmitri Shuralyov <dmitshur@golang.org>
diff --git a/env/wasip1-wasm-wasmtime/Dockerfile b/env/wasip1-wasm-wasmtime/Dockerfile
index 23aad3d..4cc46b6 100644
--- a/env/wasip1-wasm-wasmtime/Dockerfile
+++ b/env/wasip1-wasm-wasmtime/Dockerfile
@@ -12,7 +12,7 @@
 # A copy of https://wasmtime.dev/install.sh.
 COPY install.sh install.sh
 
-RUN bash install.sh --version v8.0.1
+RUN bash install.sh --version v9.0.1
 
 FROM ${REPO}/linux-x86-sid:20221109