feat(container): update image ghcr.io/twin/gatus to v5.12.1

[renovate]

This PR contains the following updates:

Package	Update	Change
ghcr.io/twin/gatus	minor	v5.11.0 -> v5.12.1

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[github-actions]

--- HelmRelease: observability/gatus Deployment: observability/gatus

+++ HelmRelease: observability/gatus Deployment: observability/gatus

@@ -124,13 +124,13 @@

           value: ..PLACEHOLDER..
         - name: TZ
           value: America/Denver
         envFrom:
         - secretRef:
             name: gatus-secret
-        image: ghcr.io/twin/gatus:v5.11.0
+        image: ghcr.io/twin/gatus:v5.12.1
         livenessProbe:
           failureThreshold: 3
           httpGet:
             path: /health
             port: 80
           initialDelaySeconds: 0

[github-actions]

--- kubernetes/apps/observability/gatus/app Kustomization: flux-system/gatus HelmRelease: observability/gatus

+++ kubernetes/apps/observability/gatus/app Kustomization: flux-system/gatus HelmRelease: observability/gatus

@@ -44,13 +44,13 @@

               TZ: America/Denver
             envFrom:
             - secretRef:
                 name: gatus-secret
             image:
               repository: ghcr.io/twin/gatus
-              tag: v5.11.0
+              tag: v5.12.1
             probes:
               liveness:
                 custom: true
                 enabled: true
                 spec:
                   failureThreshold: 3