Add ltdl dependencies for aarch64

Fixes `make test` and fix #24380 on aarch64

Signed-off-by: Justin Cormack <justin.cormack@docker.com>

Dockerfile.aarch64

@@ -36,6 +36,7 @@ RUN apt-get update && apt-get install -y \
 	libapparmor-dev \
 	libc6-dev \
 	libcap-dev \
+	libltdl-dev \
 	libsqlite3-dev \
 	libsystemd-dev \
 	mercurial \