Release 4.4.4 - Arduino API 1.5.1 update

Overview

Update to the latest Arduino API release (1.5.1), which includes some String bug fixes among others. Should not affect user code.

Arduino API

• Move to Arduino API 10501 (#2797)

New Boards, Fixes

• Add new RP2350 Metro! (#2795)
• Fix Wire/Wire1 definitions for Xaio RP2350 (#2811)
• Correct Seeed XAIO RP2350 config (#2803)

Wire/I2C

• added I2C TwoWire::busIdle to be checked by writeReadAsync (#2798)
• fixed: Wire::writeReadAsync not setting _dmaSendBufferLen, therefore allocating the DMA buffer anew on every call (#2796)