Sonoff GPIO pin 0 does not support PULLUP_PIN mode

### The problem

Running ESPHome-dev V2021.10.0-dev on HA Supervisor-2021.09.0, Core-2021.9.7. Went to recompile and update nodes with new ESPHome packages and encountered the following issue during "validate."

Failed config

binary_sensor.gpio: [source /config/esphome/esp-th16-1.yaml:50]
platform: gpio
pin: [source /config/esphome/esp-th16-1.yaml:52]
number: GPIO0

GPIO Pin 0 does not support pullup pin mode. Please choose another pin.
mode: INPUT_PULLUP [source /config/esphome/esp-th16-1.yaml:53]
inverted: True
name: TH16 #1 Basic Button
on_press:
- switch.toggle: relay

Current documents found here https://esphome.io/devices/sonoff_basic.html still show PULLUP_MODE still used for basic Sonoff power buttons.

### Which version of ESPHome has the issue?

v2021.10.0-dev

### What type of installation are you using?

Home Assistant Add-on

### Which version of Home Assistant has the issue?

2021.9.7

### What platform are you using?

ESP8266

### Board

Sonoff S31 and Sonoff TH16

### Component causing the issue

PULLUP_MODE

### Example YAML snippet

```yaml
substitutions:
# Change the disp_name to something you want
disp_name: ESP TH16 1
# Interval of how often the power is updated
update_time: 10s

esphome:
name: esp-th16-1
platform: ESP8266
board: esp01_1m

wifi:
ssid: "XX"
password: "XX"

# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "Esp-Th16-1 Fallback Hotspot"
password: ""

# Optional manual IP
manual_ip:
static_ip: 192.168.50.15
gateway: 192.168.50.1
subnet: 255.255.255.0

captive_portal:

# Enable logging
logger:

# Enable Home Assistant API
api:

#mqtt:
# broker: 192.168.1.3
# username: th161
# password: th@161
# discovery: true

ota:

web_server:
port: 80
auth:
username: XX
password: ""

binary_sensor:
- platform: gpio
pin:
number: GPIO0
mode: INPUT_PULLUP
inverted: True
name: "TH16 #1 Basic Button"
on_press:
- switch.toggle: relay

sensor:
- platform: dht
pin: GPIO14
temperature:
unit_of_measurement: "C"
name: "TH16 #1 Temperature °C"
id: "temp"
humidity:
unit_of_measurement: "% HUM"
name: "TH16 #1 Humidity"
model: SI7021
update_interval: 30s

- platform: template
name: "TH16 #1 Temperature"
unit_of_measurement: "°F"
lambda: return (id(temp).state * (9.0/5.0) + 32.0);

switch:
- platform: gpio
name: "TH16 #1 Basic Relay"
pin: GPIO12
id: relay

- platform: restart
name: ${disp_name} Restart

status_led:
pin:
number: GPIO13
inverted: yes

time:
- platform: homeassistant
id: homeassistant_time
```

### Anything in the logs that might be useful for us?

```txt
INFO Reading configuration /config/esphome/esp-th16-1.yaml...
INFO Detected timezone 'EST' with UTC offset -5
Failed config

binary_sensor.gpio: [source /config/esphome/esp-th16-1.yaml:50]
platform: gpio
pin: [source /config/esphome/esp-th16-1.yaml:52]
number: GPIO0

GPIO Pin 0 does not support pullup pin mode. Please choose another pin.
mode: INPUT_PULLUP [source /config/esphome/esp-th16-1.yaml:53]
inverted: True
name: TH16 #1 Basic Button
on_press:
- switch.toggle: relay
```

### Additional information

_No response_