chore(deps): update dtolnay/rust-toolchain digest to 89b1218

[dreadnode-renovate-bot]

This PR contains the following updates:

Package	Type	Update	Change
dtolnay/rust-toolchain (changelog)	action	digest	6bed076 → 89b1218

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 80.50%. Comparing base (d0c3ba9) to head (4209749).
⚠️ Report is 5 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #500   +/-   ##
=======================================
  Coverage   80.50%   80.50%           
=======================================
  Files         460      460           
  Lines      161612   161612           
=======================================
+ Hits       130103   130104    +1     
+ Misses      31509    31508    -1     

see 1 file with indirect coverage changes

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