Install rpm2cpio and cpio if missing for uboot test extraction

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: mangelajo

.github/workflows/python-tests.yaml

@@ -86,6 +86,8 @@ jobs:
           command -v dhclient &>/dev/null           || pkgs+=(isc-dhcp-client)
           command -v dig &>/dev/null                || pkgs+=(dnsutils)
           command -v renode &>/dev/null              || pkgs+=(renode)
+          command -v rpm2cpio &>/dev/null            || pkgs+=(rpm2cpio)
+          command -v cpio &>/dev/null                || pkgs+=(cpio)
 
           if [ ${#pkgs[@]} -gt 0 ]; then
             # add renode repo if needed