Update grpcbox for chatterbox performance work

[Vagabond]

Depends on tsloughter/chatterbox#22

[tsloughter]

I think the github actions Ci needs to be updated to ubuntu 20.04 or it won't run.

[tsloughter]

On 25 I get 2 failures because of:

{handshake_failure,
                                                          "TLS server: In state hello at ssl_handshake.erl:2109 generated SERVER ALERT: Fatal - Handshake Failure\n unacceptable_rsa_key"}}}

[Vagabond]

On 25 I get 2 failures because of:

{handshake_failure,
                                                          "TLS server: In state hello at ssl_handshake.erl:2109 generated SERVER ALERT: Fatal - Handshake Failure\n unacceptable_rsa_key"}}}

I'm pretty sure this is some pre-existing bitrot?

[Vagabond]

I thnk the previous CI job needs to be cancelled so it can retry with the new workflow file

[tsloughter]

Yea, it is bitrot. If you have any ideas though let me know :). I've been banging my head against chatterbox on otp-25/26.

Tests are going to fail on 23 so need to drop that.

[Vagabond]

I assume the bundled certificates have become obsolete somehow (I decoded them and they're still chronologically valid) but maybe RSA1024 is no longer allowed?

[tsloughter]

Ah yup, I thought I tried adding that back to allowed and it still failed so thought it wasn't the issue. But generating new keys worked.

[Vagabond]

Ok, I will rebase once you have new keys merged.

[tsloughter]

Switch this to tsloughter/chatterbox and I'll merge after the rebase. Not ready to make a chatterbox release with such big changes yet but want it easy to test it for others.

[codecov]

Codecov Report

Patch coverage: 66.66% and project coverage change: -0.24 ⚠️

Comparison is base (855947e) 39.75% compared to head (2ef767c) 39.51%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #102      +/-   ##
==========================================
- Coverage   39.75%   39.51%   -0.24%     
==========================================
  Files          28       28              
  Lines        2118     2118              
==========================================
- Hits          842      837       -5     
- Misses       1276     1281       +5     

Impacted Files	Coverage Δ
src/grpcbox_client_stream.erl	68.91% <ø> (-0.42%)	⬇️
src/grpcbox_subchannel.erl	62.22% <40.00%> (-10.51%)	⬇️
src/grpcbox_stream.erl	64.61% <100.00%> (ø)

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