ci: Ubuntu Server image update

The bot is in PTO...

Upgrade also to https

Signed-off-by: Lluis Campos <lluis.campos@northern.tech>

scripts/test/run-tests.sh

@@ -43,7 +43,7 @@ UBUNTU_IMAGE_URL="https://downloads.mender.io/mender-convert/images/Ubuntu-Focal
 DEBIAN_IMAGE_URL="https://downloads.mender.io/mender-convert/images/Debian-11-x86-64.img.gz"
 
 ## Auto-update
-UBUNTU_SERVER_RPI_IMAGE_URL="http://cdimage.ubuntu.com/ubuntu/releases/20.04/release/ubuntu-20.04.4-preinstalled-server-armhf+raspi.img.xz"
+UBUNTU_SERVER_RPI_IMAGE_URL="https://cdimage.ubuntu.com/ubuntu/releases/20.04/release/ubuntu-20.04.5-preinstalled-server-armhf+raspi.img.xz"
 
 # Keep common function declarations in separate utils script
 UTILS_PATH=${0/$(basename $0)/test-utils.sh}