ci: return to using Ubuntu 22.04 in MSAN jobs

We no-longer need to use 23.04, now that we aren't installing clang-16
and friends.

.cirrus.yml

@@ -252,11 +252,11 @@ task:
     << : *CIRRUS_EPHEMERAL_WORKER_TEMPLATE_ENV
 
 task:
-  name: '[MSan, depends] [lunar]'
+  name: '[MSan, depends] [jammy]'
   << : *GLOBAL_TASK_TEMPLATE
   container:
     docker_arguments:
-      CI_IMAGE_NAME_TAG: ubuntu:lunar
+      CI_IMAGE_NAME_TAG: ubuntu:jammy
       FILE_ENV: "./ci/test/00_setup_env_native_msan.sh"
   env:
     << : *CIRRUS_EPHEMERAL_WORKER_TEMPLATE_ENV

ci/test/00_setup_env_native_fuzz_with_msan.sh

@@ -6,7 +6,7 @@
 
 export LC_ALL=C.UTF-8
 
-export CI_IMAGE_NAME_TAG="ubuntu:23.04" # Version 23.04 will reach EOL in Jan 2024, and can be replaced by "ubuntu:24.04" (or anything else that ships the wanted clang version).
+export CI_IMAGE_NAME_TAG="ubuntu:22.04"
 LIBCXX_DIR="${BASE_SCRATCH_DIR}/msan/cxx_build/"
 export MSAN_FLAGS="-fsanitize=memory -fsanitize-memory-track-origins=2 -fno-omit-frame-pointer -g -O1 -fno-optimize-sibling-calls"
 LIBCXX_FLAGS="-nostdinc++ -nostdlib++ -isystem ${LIBCXX_DIR}include/c++/v1 -L${LIBCXX_DIR}lib -Wl,-rpath,${LIBCXX_DIR}lib -lc++ -lc++abi -lpthread -Wno-unused-command-line-argument"

ci/test/00_setup_env_native_msan.sh

@@ -6,7 +6,7 @@
 
 export LC_ALL=C.UTF-8
 
-export CI_IMAGE_NAME_TAG="ubuntu:23.04" # Version 23.04 will reach EOL in Jan 2024, and can be replaced by "ubuntu:24.04" (or anything else that ships the wanted clang version).
+export CI_IMAGE_NAME_TAG="ubuntu:22.04"
 LIBCXX_DIR="${BASE_SCRATCH_DIR}/msan/cxx_build/"
 export MSAN_FLAGS="-fsanitize=memory -fsanitize-memory-track-origins=2 -fno-omit-frame-pointer -g -O1 -fno-optimize-sibling-calls"
 LIBCXX_FLAGS="-nostdinc++ -nostdlib++ -isystem ${LIBCXX_DIR}include/c++/v1 -L${LIBCXX_DIR}lib -Wl,-rpath,${LIBCXX_DIR}lib -lc++ -lc++abi -lpthread -Wno-unused-command-line-argument"