samples: sensor: pressure_polling: Add delay between sensor readings

Introduce a 1000 ms delay between consecutive sensor readings to prevent
logging overflow and reduce console clutter.

Signed-off-by: Tahsin Mutlugun <Tahsin.Mutlugun@analog.com>

samples/sensor/pressure_polling/src/main.c

@@ -57,6 +57,8 @@ int main(void)
 			}
 			printk("\n");
 		}
+
+		k_msleep(1000);
 	}
 	return 0;
 }