fix: bitnami image hardcoded in init container definition (#41257)

## Description

Hardcoded image reference was missed in the previous Bitnami image fix. 

see: https://github.com/bitnami/charts/issues/35256

Fixes #`Issue Number`  
_or_  
Fixes `Issue URL`
> [!WARNING]  
> _If no issue exists, please create an issue first, and check with the
maintainers if the issue is valid._

## Automation

/ok-to-test tags=""

### 🔍 Cypress test results
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> [!CAUTION]  
> If you modify the content in this section, you are likely to disrupt
the CI result for your PR.

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## Communication
Should the DevRel and Marketing teams inform users about this change?
- [ ] Yes
- [ ] No


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->

## Summary by CodeRabbit

- New Features
- Init container images for Redis, MongoDB, and PostgreSQL now respect
chart values for registry, repository, and tag, allowing customization
and private registry support. Defaults are no longer hardcoded; behavior
for explicitly provided custom images remains unchanged. This helps with
compliance, air-gapped deployments, and consistency.
- Chores
  - Bumped Helm chart to 3.6.5.

<!-- end of auto-generated comment: release notes by coderabbit.ai -->

deploy/helm/Chart.yaml

@@ -11,7 +11,7 @@ sources:
   - https://github.com/appsmithorg/appsmith
 home: https://www.appsmith.com/
 icon: https://assets.appsmith.com/appsmith-icon.png
-version: 3.6.4
+version: 3.6.5
 dependencies:
   - condition: redis.enabled
     name: redis

deploy/helm/templates/deployment.yaml

@@ -65,7 +65,7 @@ spec:
       {{- if ((.Values.initContainer.redis).image) }}
         image: {{ .Values.initContainer.redis.image }}
       {{- else }}
-        image: "docker.io/redis:7.0.15"
+        image: "{{ .Values.redis.image.registry }}/{{ .Values.redis.image.repository }}:{{ .Values.redis.image.tag }}"
       {{- end }}
         command: ['sh', '-c', "until redis-cli -h {{.Release.Name}}-redis-master.{{.Release.Namespace}}.svc.cluster.local ping ; do echo waiting for redis; sleep 2; done"]
       {{- end }}
@@ -74,7 +74,7 @@ spec:
       {{- if ((.Values.initContainer.mongodb).image) }}
         image: {{ .Values.initContainer.mongodb.image }}
       {{- else }}
-        image:  "docker.io/bitnami/mongodb:6.0.13"
+        image:  "{{  .Values.mongodb.image.registry }}/{{ .Values.mongodb.image.repository }}:{{ .Values.mongodb.image.tag }}"
       {{- end }}
         command: ['sh', '-c', "until mongosh --host appsmith-mongodb.{{.Release.Namespace}}.svc.cluster.local --eval 'db.runCommand({ping:1})' ; do echo waiting for mongo; sleep 2; done"]
       {{- end }}
@@ -83,7 +83,7 @@ spec:
       {{- if ((.Values.initContainer.postgresql).image) }}
         image: {{ .Values.initContainer.postgresql.image }}
       {{- else}}
-        image: docker.io/bitnami/postgresql:14.5.0-debian-11-r21
+        image: "{{ .Values.postgresql.image.registry }}/{{ .Values.postgresql.image.repository }}:{{ .Values.postgresql.image.tag }}"
       {{- end}}
         command: ['sh', '-c', "until pg_isready -U $postgresuser -d $postgresdb -h {{.Release.Name}}-postgresql.{{.Release.Namespace}}.svc.cluster.local; do echo waiting for postgresql; sleep 2; done"]
       {{- end }}

deploy/helm/tests/__snapshot__/defaults_snapshot_test.yaml.snap

@@ -25,7 +25,7 @@
         app.kubernetes.io/instance: RELEASE-NAME
         app.kubernetes.io/managed-by: Helm
         app.kubernetes.io/name: appsmith
-        appsmith.sh/chart: appsmith-3.6.4
+        appsmith.sh/chart: appsmith-3.6.5
       name: RELEASE-NAME-appsmith
       namespace: NAMESPACE
   3: |
@@ -36,7 +36,7 @@
         app.kubernetes.io/instance: RELEASE-NAME
         app.kubernetes.io/managed-by: Helm
         app.kubernetes.io/name: appsmith
-        appsmith.sh/chart: appsmith-3.6.4
+        appsmith.sh/chart: appsmith-3.6.5
       name: RELEASE-NAME-appsmith
       namespace: NAMESPACE
     spec:
@@ -114,13 +114,13 @@
                 - sh
                 - -c
                 - until mongosh --host appsmith-mongodb.NAMESPACE.svc.cluster.local --eval 'db.runCommand({ping:1})' ; do echo waiting for mongo; sleep 2; done
-              image: docker.io/bitnami/mongodb:6.0.13
+              image: docker.io/bitnamilegacy/mongodb:6.0.13
               name: mongo-init-container
             - command:
                 - sh
                 - -c
                 - until pg_isready -U $postgresuser -d $postgresdb -h RELEASE-NAME-postgresql.NAMESPACE.svc.cluster.local; do echo waiting for postgresql; sleep 2; done
-              image: docker.io/bitnami/postgresql:14.5.0-debian-11-r21
+              image: docker.io/bitnamilegacy/postgresql:14.12.0
               name: psql-init-container
           securityContext: {}
           serviceAccountName: RELEASE-NAME-appsmith
@@ -143,7 +143,7 @@
         app.kubernetes.io/instance: RELEASE-NAME
         app.kubernetes.io/managed-by: Helm
         app.kubernetes.io/name: appsmith
-        appsmith.sh/chart: appsmith-3.6.4
+        appsmith.sh/chart: appsmith-3.6.5
       name: RELEASE-NAME-appsmith-headless
       namespace: NAMESPACE
     spec:
@@ -182,7 +182,7 @@
         app.kubernetes.io/instance: RELEASE-NAME
         app.kubernetes.io/managed-by: Helm
         app.kubernetes.io/name: appsmith
-        appsmith.sh/chart: appsmith-3.6.4
+        appsmith.sh/chart: appsmith-3.6.5
       name: RELEASE-NAME-appsmith
       namespace: NAMESPACE
     spec:
@@ -203,7 +203,7 @@
         app.kubernetes.io/instance: RELEASE-NAME
         app.kubernetes.io/managed-by: Helm
         app.kubernetes.io/name: appsmith
-        appsmith.sh/chart: appsmith-3.6.4
+        appsmith.sh/chart: appsmith-3.6.5
       name: RELEASE-NAME-appsmith
       namespace: NAMESPACE
     secrets: