Update postgres Docker tag to v17

cluster/apps/gitea/gitea-db.yml

@@ -22,7 +22,7 @@ spec:
           mountPath: /var/lib/postgresql/data
       containers:
       - name: gitea-db
-        image: postgres:15.10
+        image: postgres:17.5
         ports:
         - containerPort: 5432
         env:

cluster/apps/invidious/invidious.yml

@@ -42,7 +42,7 @@ spec:
         - name: postgres-data
           mountPath: /var/lib/postgresql/data
       - name: postgres
-        image: postgres:15.13
+        image: postgres:17.5
         restartPolicy: Always
         env:
         - name: POSTGRES_DB