[ci] add tcl to dependency list
apt-get install --no-install-recommends -y \
libdatetime-perl libc6 libffi-dev libgcc1 libreadline8 libstdc++6 \
-libtcl8.6 python3.8 python3-pip zlib1g libbz2-1.0 \
+libtcl8.6 tcl python3.8 python3-pip zlib1g libbz2-1.0 \
iverilog git rsync make curl wget tree python3.8-venv
