Bump grafana image to remove angular plugins

Author: technowhizz

etc/kayobe/kolla-image-tags.yml

@@ -6,6 +6,9 @@ kolla_image_tags:
   openstack:
     rocky-9: 2025.1-rocky-9-20250730T105631
     ubuntu-noble: 2025.1-ubuntu-noble-20250730T105631
+  grafana:
+    rocky-9: 2025.1-rocky-9-20250916T101619
+    ubuntu-noble: 2025.1-ubuntu-noble-20250916T101619
   keystone:
     rocky-9: 2025.1-rocky-9-20250805T134044
     ubuntu-noble: 2025.1-ubuntu-noble-20250805T134044