update MSRV to 1.76 (due to ascii-armor)

[zoedberg]

No description provided.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 63.2%. Comparing base (4ab7d0d) to head (0d2f818).
Report is 37 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff            @@
##           master    #184     +/-   ##
========================================
- Coverage    67.3%   63.2%   -4.1%     
========================================
  Files          20      18      -2     
  Lines        1982    1715    -267     
========================================
- Hits         1334    1084    -250     
+ Misses        648     631     -17     

Flag	Coverage Δ
rust	63.2% <ø> (-4.1%)	⬇️

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[zoedberg]

I'm trying to understand why the testing (macos-13) job fails. @dr-orlovsky have you ever encountered such issue?

[zoedberg]

It seems it was just a temporary issue. I don't understand why there's an expected check still called toolchains (1.75.0) though, @dr-orlovsky do you have any idea? Apart from that this PR can be merged

[dr-orlovsky]

I'm trying to understand why the testing (macos-13) job fails. @dr-orlovsky have you ever encountered such issue?

Yes, all the time. It seems github has a low availability of apple silicon machines and fequently CI hangs on macos-13 (as well as windows sometimes).

an expected check still called toolchains (1.75.0)

It should be changed in the branch rules in settings. Doing that.

[dr-orlovsky]

ACK 0d2f818