Update toolchain and bins to 2.5.0-2 autobuild (#5441)

The complete toolchain, including mkspiffs, esptool, C, C++, newlib,
and others (BearSSL excluded) is now built and uploaded with a single
command to ensure repeatability and minimize manual mistakes.  All
OSes and architectures are built at a time.

Update to 2.5.0-2 throught the chain.

Author: earlephilhower