release v0.3.8: chart metadata + image tags

- Chart 0.2.3 -> 0.2.4, appVersion 0.2.1 -> 0.3.7 (metadata labels only;
  pod templates use selectorLabels, no statefulset churn)
- values-apollo image tags 0.3.7 -> 0.3.8 (backend+frontend roll once)

deploy/helm/pargar/Chart.yaml

@@ -2,8 +2,8 @@ apiVersion: v2
 name: pargar
 description: Pargar gated LMS - Go API, Next.js frontend, Postgres, Redis, S3-compatible storage
 type: application
-version: 0.2.3
-appVersion: "0.2.1"
+version: 0.2.4
+appVersion: "0.3.7"
 keywords:
   - lms
   - pargar

deploy/helm/pargar/values-apollo.yaml

@@ -11,7 +11,7 @@ backend:
   image:
     pullPolicy: IfNotPresent
     repository: pargar-backend
-    tag: 0.3.7
+    tag: 0.3.8
   metrics:
     serviceMonitor:
       enabled: true
@@ -41,7 +41,7 @@ frontend:
   image:
     pullPolicy: IfNotPresent
     repository: pargar-frontend
-    tag: 0.3.7
+    tag: 0.3.8
   podDisruptionBudget:
     enabled: false
   replicaCount: 2