[v1.8.x] Rebuild for openssl3

[h-vetinari]

This will probably fail due to conda-forge/aws-c-s3-feedstock#125, but wanted to get the ball rolling.

[conda-forge-linter]

Hi! This is the friendly automated conda-forge-linting service.

I just wanted to let you know that I linted all conda-recipes in your PR (recipe) and found it was in an excellent condition.

[h-vetinari]

Looks like we have more stuff to rebuild in the aws stack...

The reported errors are:
- Encountered problems while solving:
-   - package aws-c-event-stream-0.2.15-h92b359b_1 requires aws-c-io >=0.13.4,<0.13.5.0a0, but none of the providers can be installed

[h-vetinari]

And if we're unlucky, we won't be able to use old aws-sdk-cpp with other newer aws-* packages:

$SRC_DIR/aws-cpp-sdk-core/source/utils/event/EventStreamEncoder.cpp:86:64: error: could not convert 'signedMessage.aws_event_stream_message::message_buffer' from 'aws_byte_buf' to 'bool'
   86 |                 const auto signedMessageLength = signedMessage.message_buffer ? aws_event_stream_message_total_length(&signedMessage) : 0;
      |                                                  ~~~~~~~~~~~~~~^~~~~~~~~~~~~~
      |                                                                |
      |                                                                aws_byte_buf

[h-vetinari]

Now waiting for conda-forge/aws-c-s3-feedstock#127. Still unclear if the 1.8 code is still compatible with newer versions of the aws-c-* stack, but will check once the resolver runs through

[h-vetinari]

Yeah... old aws-sdk-cpp is not compatible with new aws-c-* stack anymore, so this has nothing to do with OpenSSL 3.

That means we're stuck until we get a solution for that evergreen: aws/aws-sdk-cpp#1809

[h-vetinari]

Not worth it