Release 4.3.0 - Pico 2W and RP2350 WiFi

Overview

Adds WiFi support to RP2350-based boards like the Raspberry Pi Pico 2W, Sparkfun Thing Plus RP2350, and Pimoroni Pico Plus 2W. SDK update to support these new devices.

WiFi and New Boards

• Update to SDK 2.1.0, add Pico 2W (#2629)
• Add Adafruit Floppsy board (#2628)
• Support WiFi/BT/BLE with RP2350 CYW43 boards (#2616)
• WiFiUDP only emit a packet on flush if not ended (#2618)

Infrastructure

• Clean up unused parameter warnings (#2624)
• Avoid memory (de)allocation in GPIO ISR handler (#2623)