INSTALL.md: add clang for install build dependence

clang is not default package of Ubuntu 24.04. So, add clang for
install build dependence on INSTALL.md file.

Author: Bojun-Seo

INSTALL.md

@@ -399,7 +399,7 @@ sudo apt install -y zip bison build-essential cmake flex git libedit-dev \
   liblzma-dev libdebuginfod-dev arping netperf iperf libpolly-16-dev
 
 # For Noble Numbat (24.04)
-sudo apt install -y zip bison build-essential cmake flex git libedit-dev \
+sudo apt install -y zip bison build-essential cmake clang flex git libedit-dev \
   libllvm18 llvm-18-dev libclang-18-dev python3 zlib1g-dev libelf-dev libfl-dev python3-setuptools \
   liblzma-dev libdebuginfod-dev arping netperf iperf libpolly-18-dev