Update esp-hal to 0.21.0. Update esp-wifi to 0.10.1

[AnthonyGrondin]

This updates all the esp-* dependencies to their latest version and use the new alloc system for Wifi allocations instead of a stack based allocator.

All examples compile fine, but we still need to test the runtime. I did a few tests locally.

@yanshay Can you check if this fixes the issues in #42 ?

[bjoernQ]

Thanks!

The mTLS client example fails to connect currently for me even after updating the certificates but I don't expect that to be related to this PR

[bjoernQ]

Lets wait for the confirmation regarding issue 42 - then I will merge this

[yanshay]

I tried running both the sync_client and async_client examples.
They both compile but I can't get an IP no matter how many times I reset the device and how long I wait.
So I can't tell if it's working beyond that.
This WIFI issue is real severe for me and happens on several different devices (esp32, esp32s3).
But's that's to be continued on esp-hal discussions.

[yanshay]

I tried running the async_client example on ESP32S3 and it's working.
The IP issues I have on ESP32. are reproduced also unrelated to esp-mbedtls.
So I don't know to say that #42 is really fixed, because back then I had the issues with Esp32 and not on Esp32S3.
So seems like from my perspective (since I'm using mostly ESP32S3) this PR is fine.

[bjoernQ]

I guess the DHCP are unrelated so going to merge this - thanks!