Add CI for Elixir 1.17/OTP 27

[v0idpwn]

Also makes lint, integration and coverage run on Elixir 1.15, OTP 26.

OTP 27 was released today.

[whatyouhide]

Mh still fails to fetch the new OTP in CI. Also, while we fix that: let's not add OTP 25. Ideally we only need to test on newest and oldest supported versions.

[ericmj]

There are no Elixir versions that are compatible with OTP 27 yet.

https://hexdocs.pm/elixir/main/compatibility-and-deprecations.html#between-elixir-and-erlang-otp

[v0idpwn]

Thanks, @ericmj, and sorry for the noise. I didn't realize we needed official support, as I had tried elixir 1.16 and OTP 27 with success.

Updated to use Elixir 1.17 since it was released.

[v0idpwn]

Hm, I wanted to bump stream_data to avoid a deprecation warning but would need to drop support for older erlang/elixir (it seems that pre-otp 24 and pre-elixir 1.12.3 are problems). Would you be interested in dropping support for these versions or should I just accept the warnings and keep using an older stream_data version?

[v0idpwn]

Also,

Also, while we fix that: let's not add OTP 25. Ideally we only need to test on newest and oldest supported versions.

So I should test only for OTP 27 and 23.3? What about Elixir versions?

[whatyouhide]

@v0idpwn yes, only OTP 27/Elixir 1.17 + OTP 23/erliest Elixir version (can't remember which one it is, maybe we go with 1.10).

[v0idpwn]

Done. I couldn't change conformance tests version as it would cause errors. I can maybe address this in another PR.

The most important thing on this one is that we test with OTP 27 due to the OTP27+ specific code added on #370.

[whatyouhide]

Fantastic, thanks @v0idpwn ❤️