Fix compile warnings, bump deps+CI

[sgfn]

No description provided.

[codecov]

Codecov Report

❌ Patch coverage is 89.00000% with 11 lines in your changes missing coverage. Please review.
✅ Project coverage is 87.21%. Comparing base (d230a73) to head (2087f93).

Files with missing lines	Patch %	Lines
lib/ex_ice/priv/ice_agent.ex	84.93%	11 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #105      +/-   ##
==========================================
- Coverage   87.35%   87.21%   -0.14%     
==========================================
  Files          27       27              
  Lines        2095     2127      +32     
==========================================
+ Hits         1830     1855      +25     
- Misses        265      272       +7     

Files with missing lines	Coverage Δ
lib/ex_ice/ice_agent.ex	73.26% <ø> (+2.53%)	⬆️
lib/ex_ice/priv/candidate_pair.ex	100.00% <100.00%> (ø)
lib/ex_ice/priv/checklist.ex	100.00% <100.00%> (ø)
lib/ex_ice/priv/conn_check_handler/controlled.ex	94.00% <100.00%> (-0.12%)	⬇️
lib/ex_ice/priv/conn_check_handler/controlling.ex	86.76% <100.00%> (-0.38%)	⬇️
lib/ex_ice/priv/gatherer.ex	96.10% <ø> (+0.10%)	⬆️
lib/ex_ice/priv/transport/tcp.ex	92.30% <ø> (ø)
lib/ex_ice/priv/ice_agent.ex	89.05% <84.93%> (-0.05%)	⬇️

... and 6 files with indirect coverage changes

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