dws: update dws crd versions

Problem: the dws and nnf CRD versions are old.

Update them.

Author: jameshcorbett

src/python/flux_k8s/crd.py

@@ -5,11 +5,11 @@
 CRD = namedtuple("CRD", ["group", "version", "namespace", "plural"])
 
 DWS_GROUP = "dataworkflowservices.github.io"
-DWS_API_VERSION = "v1alpha4"
+DWS_API_VERSION = "v1alpha5"
 DEFAULT_NAMESPACE = "default"
 
 NNF_GROUP = "nnf.cray.hpe.com"
-NNF_API_VERSION = "v1alpha6"
+NNF_API_VERSION = "v1alpha7"
 
 
 WORKFLOW_CRD = CRD(