Update wasm-related dependencies in CI

* Update to wasi-sdk-29 released today
* Update to Wasmtime 38.0.4 which was released a week or so ago

Author: alexcrichton

src/ci/docker/host-x86_64/dist-various-2/Dockerfile

@@ -85,9 +85,9 @@ RUN /tmp/build-fuchsia-toolchain.sh
 COPY host-x86_64/dist-various-2/build-x86_64-fortanix-unknown-sgx-toolchain.sh /tmp/
 RUN /tmp/build-x86_64-fortanix-unknown-sgx-toolchain.sh
 
-RUN curl -L https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-27/wasi-sdk-27.0-x86_64-linux.tar.gz | \
+RUN curl -L https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-29/wasi-sdk-29.0-x86_64-linux.tar.gz | \
   tar -xz
-ENV WASI_SDK_PATH=/tmp/wasi-sdk-27.0-x86_64-linux
+ENV WASI_SDK_PATH=/tmp/wasi-sdk-29.0-x86_64-linux
 
 COPY scripts/freebsd-toolchain.sh /tmp/
 RUN /tmp/freebsd-toolchain.sh i686

src/ci/docker/host-x86_64/pr-check-2/Dockerfile

@@ -21,9 +21,9 @@ RUN apt-get update && apt-get install -y --no-install-recommends \
   mingw-w64 \
   && rm -rf /var/lib/apt/lists/*
 
-RUN curl -L https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-27/wasi-sdk-27.0-x86_64-linux.tar.gz | \
+RUN curl -L https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-29/wasi-sdk-29.0-x86_64-linux.tar.gz | \
   tar -xz
-ENV WASI_SDK_PATH=/wasi-sdk-27.0-x86_64-linux
+ENV WASI_SDK_PATH=/wasi-sdk-29.0-x86_64-linux
 
 ENV RUST_CONFIGURE_ARGS="--set rust.validate-mir-opts=3"
 

src/ci/docker/host-x86_64/test-various/Dockerfile

@@ -41,9 +41,9 @@ WORKDIR /
 COPY scripts/sccache.sh /scripts/
 RUN sh /scripts/sccache.sh
 
-RUN curl -L https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-27/wasi-sdk-27.0-x86_64-linux.tar.gz | \
+RUN curl -L https://github.com/WebAssembly/wasi-sdk/releases/download/wasi-sdk-29/wasi-sdk-29.0-x86_64-linux.tar.gz | \
   tar -xz
-ENV WASI_SDK_PATH=/wasi-sdk-27.0-x86_64-linux
+ENV WASI_SDK_PATH=/wasi-sdk-29.0-x86_64-linux
 
 ENV RUST_CONFIGURE_ARGS \
   --musl-root-x86_64=/usr/local/x86_64-linux-musl \
@@ -56,9 +56,9 @@ ENV RUST_CONFIGURE_ARGS \
 ENV NO_DEBUG_ASSERTIONS=1
 ENV NO_OVERFLOW_CHECKS=1
 
-RUN curl -L https://github.com/bytecodealliance/wasmtime/releases/download/v19.0.0/wasmtime-v19.0.0-x86_64-linux.tar.xz | \
+RUN curl -L https://github.com/bytecodealliance/wasmtime/releases/download/v38.0.4/wasmtime-v19.0.0-x86_64-linux.tar.xz | \
   tar -xJ
-ENV PATH "$PATH:/wasmtime-v19.0.0-x86_64-linux"
+ENV PATH "$PATH:/wasmtime-v38.0.4-x86_64-linux"
 
 ENV WASM_WASIP_TARGET=wasm32-wasip1
 ENV WASM_WASIP_SCRIPT python3 /checkout/x.py --stage 2 test --host='' --target $WASM_WASIP_TARGET \