chore(deps): update container image itzg/mc-router to 1.21.0@271f2a3 by renovate (#24353)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| [itzg/mc-router](https://togithub.com/itzg/mc-router) | digest |
`2290017` -> `271f2a3` |

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charts/stable/mc-router/Chart.yaml

@@ -33,4 +33,4 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/stable/mc-router
   - https://hub.docker.com/r/itzg/mc-router
 type: application
-version: 6.2.0
+version: 6.2.1

charts/stable/mc-router/values.yaml

@@ -1,7 +1,7 @@
 image:
   repository: itzg/mc-router
   pullPolicy: IfNotPresent
-  tag: 1.21.0@sha256:22900174c4a824f8bce83e1f58947c1bf25f7ceac218b0fcb76364328077ca63
+  tag: 1.21.0@sha256:271f2a3621b653c0b3ccc44b42cb62c6414f0e41a6d6ca002319f2408fc1489e
 service:
   main:
     ports: