CI: Move to clang-16

As this is now the stable release, move to using that now for our tests.

Signed-off-by: Tom Rini <trini@konsulko.com>
Reviewed-by: Simon Glass <sjg@chromium.org>
diff --git a/.azure-pipelines.yml b/.azure-pipelines.yml
index 64da11e..642a16f 100644
--- a/.azure-pipelines.yml
+++ b/.azure-pipelines.yml
@@ -2,7 +2,7 @@
   windows_vm: windows-2019
   ubuntu_vm: ubuntu-22.04
   macos_vm: macOS-12
-  ci_runner_image: trini/u-boot-gitlab-ci-runner:jammy-20230308-21Mar2023
+  ci_runner_image: trini/u-boot-gitlab-ci-runner:jammy-20230308-04Apr2023
   # Add '-u 0' options for Azure pipelines, otherwise we get "permission
   # denied" error when it tries to "useradd -m -u 1001 vsts_azpcontainer",
   # since our $(ci_runner_image) user is not root.
@@ -254,7 +254,7 @@
           TEST_PY_BD: "sandbox"
         sandbox_clang:
           TEST_PY_BD: "sandbox"
-          OVERRIDE: "-O clang-14"
+          OVERRIDE: "-O clang-16"
         sandbox_nolto:
           TEST_PY_BD: "sandbox"
           BUILD_ENV: "NO_LTO=1"
@@ -509,7 +509,7 @@
           OVERRIDE: "-a ASAN"
         sandbox_clang_asan:
           BUILDMAN: "sandbox"
-          OVERRIDE: "-O clang-14 -a ASAN"
+          OVERRIDE: "-O clang-16 -a ASAN"
         samsung_socfpga:
           BUILDMAN: "samsung socfpga"
         sun4i:
diff --git a/.gitlab-ci.yml b/.gitlab-ci.yml
index 2a42374..7509a7a 100644
--- a/.gitlab-ci.yml
+++ b/.gitlab-ci.yml
@@ -10,7 +10,7 @@
 
 # Grab our configured image.  The source for this is found
 # in the u-boot tree at tools/docker/Dockerfile
-image: ${MIRROR_DOCKER}/trini/u-boot-gitlab-ci-runner:jammy-20230308-21Mar2023
+image: ${MIRROR_DOCKER}/trini/u-boot-gitlab-ci-runner:jammy-20230308-04Apr2023
 
 # We run some tests in different order, to catch some failures quicker.
 stages:
@@ -277,7 +277,7 @@
 sandbox with clang test.py:
   variables:
     TEST_PY_BD: "sandbox"
-    OVERRIDE: "-O clang-14"
+    OVERRIDE: "-O clang-16"
   <<: *buildman_and_testpy_dfn
 
 sandbox without LTO test.py:
diff --git a/tools/docker/Dockerfile b/tools/docker/Dockerfile
index 20c2b2a..801bebf 100644
--- a/tools/docker/Dockerfile
+++ b/tools/docker/Dockerfile
@@ -12,7 +12,7 @@
 # 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-14 main | tee /etc/apt/sources.list.d/llvm.list
+RUN echo deb http://apt.llvm.org/jammy/ llvm-toolchain-jammy-16 main | tee /etc/apt/sources.list.d/llvm.list
 
 # Manually install the kernel.org "Crosstool" based toolchains for gcc-12.2.0
 RUN wget -O - https://mirrors.edge.kernel.org/pub/tools/crosstool/files/bin/x86_64/12.2.0/x86_64-gcc-12.2.0-nolibc-aarch64-linux.tar.xz | tar -C /opt -xJ
@@ -39,7 +39,7 @@
 	binutils-dev \
 	bison \
 	build-essential \
-	clang-14 \
+	clang-16 \
 	coreutils \
 	cpio \
 	cppcheck \