chore: merge upstream v1.23.0

[cpswan]

Foundational work for #9

- What I did

Merged upstream v1.23.0

- How I did it

git remote add upstream https://github.com/micropython/micropython.git
git fetch upstream
git remote set-url upstream --push DISABLED
git checkout v1.23.0
git checkout -b v1.23.0
git checkout aes_ctr
git merge v1.23.0
git checkout -b aes_ctr_v1.23.0
git push

- Description for the changelog

chore: merge upstream v1.22.0

[realvarx]

With the official release of v1.23.0, we should change the header that activates AES CTR. More details can be found in #8

This might be needed too: https://github.com/micropython/micropython/blob/master/ports/unix/mbedtls/mbedtls_config_port.h#L30

But inside the rp2 port: https://github.com/micropython/micropython/blob/master/ports/rp2/mbedtls/mbedtls_config_port.h

[cpswan]

@realvarx ack, but first I'd like to get this merged so the underlying pieces are in place.