chore(deps): update container image tailscale/tailscale to v1.66.4@8c80cf9 by renovate (#22711)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| tailscale/tailscale | digest | `c9a124a` -> `8c80cf9` |

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This PR has been generated by [Renovate
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charts/stable/tailscale/Chart.yaml

@@ -34,4 +34,4 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/stable/tailscale
   - https://hub.docker.com/r/tailscale/tailscale
 type: application
-version: 9.1.5
+version: 9.1.6

charts/stable/tailscale/values.yaml

@@ -1,7 +1,7 @@
 image:
   repository: tailscale/tailscale
   pullPolicy: IfNotPresent
-  tag: v1.66.4@sha256:c9a124a3fe49c95825ee95fd15312ea28faa2829334bd485ed1b948bb7990821
+  tag: v1.66.4@sha256:8c80cf92bfbc6938d05826b1aee899e629b231cecf7921bd1d72a4150e71e3f3
 serviceAccount:
   main:
     enabled: true