riotbuild: Upgrade ESP32 toolchain to GCC 14.2.0

[gschorcht]

This PR is required for the upgrade of the ESP-IDF SDK from version 4.4 to version 5.4. It provides the following changes:

• upgrades ESP32 toolchain to GCC v14.2.0
• upgrades GDB to v14.2
• upgrades QEMU for ESP32 Xtensa based SoCs to version 9.0.0
• adds QEMU for ESP32 RISC-V based SoCs
• removes picolibc compilation for ESP32

The picolibc compilation for ESP32 had to be removed since it produces error on buildung the docker image.

The toolchain should work with current master.

Depends on #257

[gschorcht]

I don't understand why the compile test for esp32-wroom-32 failed in CI. I built the riotbuild container and it works with the current master and the 2025-01 release as well.

[gschorcht]

Ah, the compilation test uses the 2024.01 release branch which can't work with this release of the ESP32 toolchain. It requires at least the 2025.01 release branch.

Obviously, it seems to be related to PR #257

[mguetschow]

You'll probably need to rebase on current master for the changes from #257 to be included.

[mguetschow]

Suggested change

	RUN echo 'Installing ESP32 QEMU for RIC-V' >&2 && \
	RUN echo 'Installing ESP32 QEMU for RISC-V' >&2 && \