Use with for database connection

scraper/daily_import_climate.py

@@ -16,8 +16,8 @@ class DwdScraper:
 
             return v
 
-        conn = psycopg2.connect(config_db["uri"])
-        cur = conn.cursor()
+        with psycopg2.connect(config_db["uri"]) as conn:
+            with conn.cursor() as cur:
 
                 cur.execute("SELECT min(dwd_last_update) FROM stations;")
                 last_date = cur.fetchall()[0][0]
@@ -109,8 +109,5 @@ class DwdScraper:
                 conn.commit()
 
 
-        cur.close()
-        conn.close()
-
 if __name__ == "__main__":
     DwdScraper().run()