chore(deps): update container image ich777/thunderbird to latest@dff5fc6 by renovate (#22190)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
| ich777/thunderbird | digest | `9df015f` -> `dff5fc6` |

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

@@ -23,7 +23,7 @@ icon: https://truecharts.org/img/hotlink-ok/chart-icons/thunderbird.webp
 keywords:
   - thunderbird
   - mail
-kubeVersion: ">=1.24.0-0"
+kubeVersion: '>=1.24.0-0'
 maintainers:
   - name: TrueCharts
     email: info@truecharts.org
@@ -34,4 +34,4 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/stable/thunderbird
   - https://hub.docker.com/r/ich777/thunderbird
 type: application
-version: 6.0.4
+version: 6.0.5

charts/stable/thunderbird/values.yaml

@@ -1,7 +1,7 @@
 image:
   pullPolicy: IfNotPresent
   repository: ich777/thunderbird
-  tag: latest@sha256:9df015f39f1d9721a74a0a8ae382bafa955b69b1aab33edac4234e41a238555a
+  tag: latest@sha256:dff5fc61f6c7972f78101c1e99a672d06c1d26932fbc5309401df1de88ffc1c6
 persistence:
   data:
     enabled: true