chore(deps): update actions-rs/toolchain digest to 16499b5

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
actions-rs/toolchain	action	digest	88dc235 -> 16499b5

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[codecov-commenter]

Codecov Report

Base: 99.13% // Head: 100.00% // Increases project coverage by +0.86% 🎉

Coverage data is based on head (8ea9195) compared to base (75539ce).
Patch has no changes to coverable lines.

Additional details and impacted files

@@             Coverage Diff             @@
##           master        #7      +/-   ##
===========================================
+ Coverage   99.13%   100.00%   +0.86%     
===========================================
  Files           1         1              
  Lines         116       115       -1     
===========================================
  Hits          115       115              
+ Misses          1         0       -1     

Impacted Files	Coverage Δ
src/lib.rs	100.00% <0.00%> (+0.86%)	⬆️

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