Merge pull request #324 from rackerlabs/renovate/diskimage-builder-3.x

chore(deps): update dependency diskimage-builder to v3.34.0

Author: nicholaskuechler

ironic-images/requirements.txt

@@ -1,4 +1,4 @@
-diskimage-builder==3.33.0
+diskimage-builder==3.34.0
 ironic-python-agent-builder==5.3.0
 python-keystoneclient==5.4.0
 python-swiftclient==4.6.0