config: core: rootfs-configs: add ca-certificates to bookworm-ltp

This package is needed for using `curl` on SSL/TLS connections, but it
is only a `Recommends`, so it must be explicitly listed as a wanted
package.

Signed-off-by: Arnaud Ferraris <[email protected]>

Author: a-wai

config/core/rootfs-configs.yaml

@@ -346,6 +346,7 @@ rootfs_configs:
       - arm64
       - armhf
     extra_packages:
+      - ca-certificates
       - curl
       - dosfstools
       - gdb-minimal