[CI] Update deps for chisel (#4675)

docker/install/ubuntu_install_chisel.sh

@@ -22,16 +22,15 @@ set -o pipefail
 
 # The https:// source added below required an apt https transport
 # support.
-apt-get install apt-transport-https
+apt-get update && apt-get install -y apt-transport-https flex bison
 
 # Install the necessary dependencies for Chisel
 echo "deb https://dl.bintray.com/sbt/debian /" | tee -a /etc/apt/sources.list.d/sbt.list
 apt-key adv --keyserver hkp://keyserver.ubuntu.com:80 --recv 2EE0EA64E40A89B84B2DF73499E82A75642AC823
-apt-get update
 
 # Note: The settings in vta/hardware/chisel/project/build.properties
 # file determines required sbt version.
-apt-get install -y sbt=1.1.1
+apt-get update && apt-get install -y sbt=1.1.1
 
 # Install the Verilator with major version 4.0
 wget https://www.veripool.org/ftp/verilator-4.010.tgz