Update to more recent version of instructions

Signed-off-by: Carsten Schafer <Carsten.Schafer@kinarasystems.com>

Author: Carsten Schafer

BUILDING.md

@@ -16,12 +16,12 @@ from the master copy needed for cmake. Please use the version of this [Poco fix]
 Poco may take several minutes depending on the platform you are building on.
 
 ## Ubuntu
-These instructions have proven to work on Ubuntu 20.4.
+These instructions have proven to work on Ubuntu 23.04.
 ```bash
-sudo apt install git cmake g++ libssl-dev libmariadb-dev
+sudo apt install git cmake g++ libssl-dev libmariadb-dev libmariadbclient-dev-compat
 sudo apt install libpq-dev libaprutil1-dev apache2-dev libboost-all-dev
-sudo apt install librdkafka-dev default-libmysqlclient-dev
-sudo apt install nlohmann-json-dev
+sudo apt install librdkafka-dev
+sudo apt install zlib1g-dev nlohmann-json3-dev ca-certificates libcurl4-openssl-dev
 
 cd ~
 git clone https://github.com/Telecominfraproject/wlan-cloud-lib-poco --branch poco-tip-v1 poco