Update tokio version to the latest to avoid tokio versions with security bugs

[yellowred]

This commit will set tokio version requirement to >=1.35.0, <2.0.0 to avoid versions with security issues. Version 1.35.0 is already normally installed when cargo update is executed. This PR is just makes it an error to install a version lower than that.

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (9856fb6) 88.64% compared to head (348db3b) 88.59%.

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Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2790      +/-   ##
==========================================
- Coverage   88.64%   88.59%   -0.05%     
==========================================
  Files         115      115              
  Lines       91894    91894              
  Branches    91894    91894              
==========================================
- Hits        81458    81416      -42     
- Misses       7953     7985      +32     
- Partials     2483     2493      +10     

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[TheBlueMatt]

Sure, though worth noting none of the security issues in Tokio thus far have impacted our usage of it (and until we bumped the MSRV we relied on a previous version of it to meet MSRV).