ci: fix pytest issue on Debian 10

Signed-off-by: Sergey V. Lobanov <[email protected]>

.github/workflows/run-tests.yml

@@ -123,6 +123,7 @@ jobs:
           ssh -i ssh-key -p2222 user@localhost "sudo apt -y install
           git build-essential cmake gcc linux-headers-\`uname -r\` 
           libpcre3-dev libssl-dev liblua5.1-0-dev kmod python3-pip 
+          libxml2-dev libxslt1-dev zlib1g-dev 
           iproute2 ppp pppoe isc-dhcp-client timelimit && 
           (sudo pip3 install pytest pytest-dependency gcovr || sudo pip3 install --break-system-packages pytest pytest-dependency gcovr)"
       - name: Copy source code to target OS