Update actions/checkout action to v6

clusters/cl01tl/applications/booklore/templates/namespace.yaml

@@ -0,0 +1,12 @@
+apiVersion: v1
+kind: Namespace
+metadata:
+  name: booklore
+  labels:
+    app.kubernetes.io/name: booklore
+    app.kubernetes.io/instance: {{ .Release.Name }}
+    app.kubernetes.io/part-of: {{ .Release.Name }}
+    pod-security.kubernetes.io/audit: privileged
+    pod-security.kubernetes.io/enforce: privileged
+    pod-security.kubernetes.io/warn: privileged
+    volsync.backube/privileged-movers: "true"