Update a sanity docker image to run iwyu (#31956)

* Added missing iwyu deps

* Docker image pushed

templates/tools/dockerfile/test/sanity/Dockerfile.template

@@ -55,6 +55,9 @@
   # Install prerequisites for the clang-tidy script
   RUN apt-get update && apt-get install -y jq git
 
+  # Install prerequisites for the iwyu script
+  RUN apt-get update && apt-get install -y jq git cmake zlib1g-dev libtinfo-dev libclang-15-dev && apt-get clean
+
   <%include file="../../bazel.include"/>
   <%include file="../../buildifier.include"/>
 

tools/dockerfile/test/sanity.current_version

@@ -1 +1 @@
-us-docker.pkg.dev/grpc-testing/testing-images-public/sanity:bd9373552b2f61d381ccc777ede10b71b6d99656@sha256:d1a021e272d33520c4f22a6924b8f21f4daaeef7769ba22020f21787afa76927
+us-docker.pkg.dev/grpc-testing/testing-images-public/sanity:48ab42c150a5f94cfbdfa339c14c2f0c8f174e12@sha256:08856cbe711e1817b3ca0caead550020a97ef68b0b9ff48637d44ef24a205964

tools/dockerfile/test/sanity/Dockerfile

@@ -99,6 +99,9 @@ RUN python3 -m pip install --upgrade --ignore-installed PyYAML==5.4.1 --user
 # Install prerequisites for the clang-tidy script
 RUN apt-get update && apt-get install -y jq git
 
+# Install prerequisites for the iwyu script
+RUN apt-get update && apt-get install -y jq git cmake zlib1g-dev libtinfo-dev libclang-15-dev && apt-get clean
+
 #========================
 # Bazel installation