chore: migrate away from unmaintained rust toolchain installer

[paulbalaji]

chore: migrate away from unmaintained rust toolchain installer

• previous toolchain action was archived almost a year ago https://github.com/actions-rs/toolchain
• new action has 1k+ stars and sensible defaults https://github.com/dtolnay/rust-toolchain
• uses minimal profile by default
• stable toolchain by default

[changeset-bot]

⚠️ No Changeset found

Latest commit: 2993734

Merging this PR will not cause a version bump for any packages. If these changes should not result in a new version, you're good to go. If these changes should result in a version bump, you need to add a changeset.

This PR includes no changesets

When changesets are added to this PR, you'll see the packages that this PR includes changesets for and the associated semver types

Click here to learn what changesets are, and how to add one.

Click here if you're a maintainer who wants to add a changeset to this PR

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 73.22%. Comparing base (b94a745) to head (3b5f0a7).

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4465   +/-   ##
=======================================
  Coverage   73.22%   73.22%           
=======================================
  Files         100      100           
  Lines        1412     1412           
  Branches      178      178           
=======================================
  Hits         1034     1034           
  Misses        357      357           
  Partials       21       21           

Components	Coverage Δ
core	84.61% <ø> (ø)
hooks	72.38% <ø> (ø)
isms	78.31% <ø> (ø)
token	88.88% <ø> (ø)
middlewares	77.39% <ø> (ø)