Merge branch 'update-loki-tag-5.15.0-bb.0' into 'master'

loki update to 5.15.0-bb.0

Closes big-bang/product/packages/loki#54

See merge request !3058

chart/values.yaml

@@ -683,11 +683,11 @@ loki:
   git:
     repo: https://repo1.dso.mil/big-bang/product/packages/loki.git
     path: "./chart"
-    tag: "5.9.2-bb.1"
+    tag: "5.15.0-bb.0"
   helmRepo:
     repoName: "registry1"
     chartName: "loki"
-    tag: "5.9.2-bb.1"
+    tag: "5.15.0-bb.0"
 
   # -- Flux reconciliation overrides specifically for the Loki Package
   flux: {}