ci: use LLVM/clang-16 in native_fuzz (ASAN) job

Similar to #27298.

Author: fanquake

.cirrus.yml

@@ -271,10 +271,10 @@ task:
     MAKEJOBS: "-j4"  # Avoid excessive memory use
 
 task:
-  name: '[fuzzer,address,undefined,integer, no depends] [jammy]'
+  name: '[fuzzer,address,undefined,integer, no depends] [lunar]'
   << : *GLOBAL_TASK_TEMPLATE
   container:
-    image: ubuntu:jammy
+    image: ubuntu:lunar
     cpu: 4  # Increase CPU and memory to avoid timeout
     memory: 16G
   env:

ci/test/00_setup_env_native_fuzz.sh

@@ -6,13 +6,13 @@
 
 export LC_ALL=C.UTF-8
 
-export CI_IMAGE_NAME_TAG="ubuntu:22.04"
+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 CONTAINER_NAME=ci_native_fuzz
-export PACKAGES="clang llvm python3 libevent-dev bsdmainutils libboost-dev libsqlite3-dev"
+export PACKAGES="clang-16 llvm-16 libclang-rt-16-dev python3 libevent-dev bsdmainutils libboost-dev libsqlite3-dev"
 export NO_DEPENDS=1
 export RUN_UNIT_TESTS=false
 export RUN_FUNCTIONAL_TESTS=false
 export RUN_FUZZ_TESTS=true
 export GOAL="install"
-export BITCOIN_CONFIG="--enable-fuzz --with-sanitizers=fuzzer,address,undefined,integer CC='clang -ftrivial-auto-var-init=pattern' CXX='clang++ -ftrivial-auto-var-init=pattern'"
+export BITCOIN_CONFIG="--enable-fuzz --with-sanitizers=fuzzer,address,undefined,integer CC='clang-16 -ftrivial-auto-var-init=pattern' CXX='clang++-16 -ftrivial-auto-var-init=pattern'"
 export CCACHE_SIZE=200M