chore(deps): update container image tccr.io/truecharts/uptime-kuma to v1.21.2 (#8271)

This PR contains the following updates:

| Package | Update | Change |
|---|---|---|
|
[tccr.io/truecharts/uptime-kuma](https://togithub.com/truecharts/containers)
| minor | `1.20.2` -> `1.21.2` |

---

### ⚠ Dependency Lookup Warnings ⚠

Warnings were logged while processing this repo. Please check the
Dependency Dashboard for more information.

---

### Configuration

📅 **Schedule**: Branch creation - At any time (no schedule defined),
Automerge - At any time (no schedule defined).

🚦 **Automerge**: Enabled.

♻ **Rebasing**: Whenever PR becomes conflicted, or you tick the
rebase/retry checkbox.

🔕 **Ignore**: Close this PR and you won't be reminded about this update
again.

---

- [ ] <!-- rebase-check -->If you want to rebase/retry this PR, check
this box

---

This PR has been generated by [Renovate
Bot](https://togithub.com/renovatebot/renovate).

<!--renovate-debug:eyJjcmVhdGVkSW5WZXIiOiIzNS42MS4wIiwidXBkYXRlZEluVmVyIjoiMzUuNjEuMCJ9-->

---------

Signed-off-by: TrueCharts-Bot <bot@truecharts.org>

charts/stable/uptime-kuma/Chart.yaml

@@ -1,5 +1,5 @@
 apiVersion: v2
-appVersion: "1.20.2"
+appVersion: "1.21.2"
 dependencies:
   - name: common
     repository: https://library-charts.truecharts.org
@@ -21,7 +21,7 @@ sources:
   - https://github.com/truecharts/charts/tree/master/charts/stable/uptime-kuma
   - https://github.com/louislam/uptime-kuma
 type: application
-version: 6.0.9
+version: 6.0.10
 annotations:
   truecharts.org/catagories: |
     - monitoring

charts/stable/uptime-kuma/values.yaml

@@ -1,7 +1,7 @@
 image:
   repository: tccr.io/truecharts/uptime-kuma
   pullPolicy: IfNotPresent
-  tag: 1.20.2@sha256:b1bb3e6fe1a35a23bd4671acdc8e014615e4495ab96537ac465a11d5938665bf
+  tag: 1.21.2@sha256:053a4fde5436c2cebe2136edf6e5c786e43c5410bca423f0f6920dc7ccee3f68
 security:
   PUID: 0
 service: