Bug#1147575: packaging of the fuzzer libraries is broken with LLVM 21, 22 and 23

[Matthias Klose]

according to
https://packages.debian.org/search?searchon=contents&keywords=libclang_rt.fuzzer&mode=filename&suite=unstable&arch=any

e.g.
/usr/lib/llvm-23/lib/clang/23/lib/linux/libclang_rt.fuzzer-x86_64.a
in libclang-rt-N-dev

while -fsanitize=fuzzer apparently hard-codes
/usr/lib/llvm-N/lib/clang/N/lib/x86_64-pc-linux-gnu/libclang_rt.fuzzer.a