upgrade backup procedure

infrastructure/backup/postgres/cronjob.yaml

@@ -14,15 +14,10 @@ spec:
             image: postgres:15
             command: ["/bin/sh"]
             args:
-              - "-c"
-              - >-
-                echo "$postgress_password" > /root/.pgpass
-                &&
-                chmod 600 /root/.pgpass
-                &&
-                pg_dumpall -U postgres -h postgres-postgresql.postgres > /backup/backup-$(date +"%m-%d-%Y-%H-%M").sql
+              - '-c'
+              - 'pg_dumpall -U postgres -h postgres-postgresql.postgres > /backup/backup-$(date +"%m-%d-%Y-%H-%M").sql'
             env:
-            - name: postgress_password
+            - name: PGPASSWORD
               valueFrom:
                 secretKeyRef:
                   name: postgres-password