Update dependencies in debian tests control file to fix RDM tests command

Author: peternewman

debian/tests/control

@@ -5,7 +5,7 @@ Test-Command: ola_rdm_get --list-pids
 Depends: ola
 
 Test-Command: set -e ; for py in $(py3versions -s 2>/dev/null) ; do echo "Testing with $py:" ; $py $(which rdm_responder_test.py) --help ; done
-Depends: ola-rdm-tests
+Depends: python3-all, ola-rdm-tests
 
 Test-Command: set -e ; for py in $(py3versions -s 2>/dev/null) ; do cd "$ADTTMP" ; echo "Testing with $py:" ; $py -c "from ola.ClientWrapper import ClientWrapper; print(ClientWrapper)" ; done
 Depends: python3-all, ola, ola-python