fix(container): update image docker.io/jmalloc/echo-server to v0.3.7

[renovate]

This PR contains the following updates:

Package	Update	Change
docker.io/jmalloc/echo-server	patch	0.3.6 -> v0.3.7

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[github-actions]

--- kubernetes/apps/networking/echo-server/app Kustomization: flux-system/echo-server HelmRelease: networking/echo-server

+++ kubernetes/apps/networking/echo-server/app Kustomization: flux-system/echo-server HelmRelease: networking/echo-server

@@ -34,13 +34,13 @@

         containers:
           app:
             env:
               PORT: 8080
             image:
               repository: docker.io/jmalloc/echo-server
-              tag: 0.3.6
+              tag: v0.3.7
             probes:
               liveness:
                 custom: true
                 enabled: true
                 spec:
                   failureThreshold: 3

[github-actions]

--- HelmRelease: networking/echo-server Deployment: networking/echo-server

+++ HelmRelease: networking/echo-server Deployment: networking/echo-server

@@ -36,13 +36,13 @@

       hostPID: false
       dnsPolicy: ClusterFirst
       containers:
       - env:
         - name: PORT
           value: '8080'
-        image: docker.io/jmalloc/echo-server:0.3.6
+        image: docker.io/jmalloc/echo-server:v0.3.7
         livenessProbe:
           failureThreshold: 3
           httpGet:
             path: /health
             port: 8080
           initialDelaySeconds: 0