[BT] Update Theengs Decoder to v2.4.5 (#2371)

Pin the decoder library to the v2.4.5 release archive instead of the
moving development branch.

Co-authored-by: Florian <1technophile@users.noreply.github.com>
Co-authored-by: Claude Opus 5 <noreply@anthropic.com>

platformio.ini

@@ -159,7 +159,7 @@ somfy_remote=Somfy_Remote_Lib@0.3.0
 rtl_433_ESP = https://github.com/NorthernMan54/rtl_433_ESP/archive/v0.6.2.zip
 emodbus =  miq19/eModbus@1.0.0
 gfSunInverter = https://github.com/BlackSmith/GFSunInverter/archive/v1.0.1.zip
-decoder = https://github.com/theengs/decoder/archive/development.zip
+decoder = https://github.com/theengs/decoder/archive/v2.4.5.zip
 ssd1306 = https://github.com/ThingPulse/esp8266-oled-ssd1306/archive/f96fd6a.zip
 lm75 = jeremycole/I2C Temperature Sensors derived from the LM75@^1.0.3
 rn8209 = https://github.com/theengs/RN8209C-SDK/archive/arduino.zip