feat: 🎉 Add SSL certificate configuration for deployment

Adds configuration for SSL certificate in the deployment settings by introducing environment variables and volume mounts for the Elasticsearch certificate.

This enhancement improves security by ensuring that the application can properly utilize SSL certificates for secure communication.

template/stacks/forgejo/forgejo-server/values.yaml

@@ -17,6 +17,22 @@ persistence:
 test:
   enabled: false
 
+deployment:
+  env:
+    - name: SSL_CERT_FILE
+      value: /etc/elasticsearch/elasticsearch.cer
+
+extraVolumeMounts:
+  - mountPath: /etc/elasticsearch
+    name: elasticsearch-cert-volume
+    readOnly: true
+
+extraVolumes:
+  - name: elasticsearch-cert-volume
+    configMap:
+      defaultMode: 420
+      name: elasticsearch-cert
+
 gitea:
   additionalConfigFromEnvs:
     - name: FORGEJO__storage__MINIO_ACCESS_KEY_ID