gitea: migrate to envFrom with per-container InfisicalSecrets

Flat CR narrowed to recursive: false; it still serves the SMB mount credentials and the Actions runner token, which the runner Helm chart reads via existingSecret.

applications/gitea/postgres/gitea-postgres-statefulset.yaml

@@ -31,24 +31,9 @@ spec:
           volumeMounts:
             - name: gitea-postgresql-database
               mountPath: /var/lib/postgresql/volumes/pgdata
-          env:
-            - name: POSTGRES_PASSWORD
-              valueFrom:
-                secretKeyRef:
-                  name: gitea-secrets
-                  key: db_password
-            - name: POSTGRES_USER
-              valueFrom:
-                secretKeyRef:
-                  name: gitea-secrets
-                  key: db_user
-            - name: POSTGRES_DB
-              valueFrom:
-                secretKeyRef:
-                  name: gitea-secrets
-                  key: db_name
-            - name: PGDATA
-              value: /var/lib/postgresql/volumes/pgdata/data
+          envFrom:
+            - secretRef:
+                name: gitea-postgres-secrets
       volumes:
         - name: gitea-postgresql-database
           persistentVolumeClaim: