chore: Update CO2_GADGET_REV to "084-development" in platformio.ini

platformio.ini

@@ -10,7 +10,7 @@ extra_configs = platformio_extra_configs.ini
 [version]
 build_flags =
     -D CO2_GADGET_VERSION="\"0.12."\"
-    -D CO2_GADGET_REV="\"083-development"\"
+    -D CO2_GADGET_REV="\"084-development"\"
 
 ;****************************************************************************************
 ;*** You can disable features by commenting the line with a semicolon at the beginning
@@ -21,11 +21,10 @@ build_flags =
     -DSUPPORT_BLE
     -DSUPPORT_BUZZER
     ; -DSUPPORT_ESPNOW
-    ; -DSUPPORT_MDNS
+    -DSUPPORT_MDNS
     -DSUPPORT_MQTT
     -DSUPPORT_MQTT_DISCOVERY
     -DSUPPORT_OTA
-    -DSUPPORT_CAPTIVE_PORTAL
 
 ;****************************************************************************************
 ;*** This will be deprecated. It's here only for backward compatibility.
@@ -161,7 +160,6 @@ build_flags =
 ;****************************************************************************************
 ;*** Environment specific data. You can override the common data for each environment
 ;****************************************************************************************
-
 [env:esp32dev]
 platform = https://github.com/platformio/platform-espressif32.git
 board = esp32dev