CI: Update to using clang-17

Currently, llvm-17 is the stable release. Update our container and CI to
fetch and use that.

Signed-off-by: Tom Rini <trini@konsulko.com>

tools/docker/Dockerfile

@@ -12,7 +12,7 @@ ENV DEBIAN_FRONTEND=noninteractive
 # Add LLVM repository
 RUN apt-get update && apt-get install -y gnupg2 wget xz-utils && rm -rf /var/lib/apt/lists/*
 RUN wget -O - https://apt.llvm.org/llvm-snapshot.gpg.key | apt-key add -
-RUN echo deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-16 main | tee /etc/apt/sources.list.d/llvm.list
+RUN echo deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-17 main | tee /etc/apt/sources.list.d/llvm.list
 
 # Manually install the kernel.org "Crosstool" based toolchains for gcc-13.2.0
 RUN wget -O - https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/x86_64/13.2.0/x86_64-gcc-13.2.0-nolibc-aarch64-linux.tar.xz | tar -C /opt -xJ
@@ -40,7 +40,7 @@ RUN apt-get update && apt-get install -y \
 	bison \
 	build-essential \
 	cgpt \
-	clang-16 \
+	clang-17 \
 	coreutils \
 	cpio \
 	curl \