[deps]: Update dtolnay/rust-toolchain digest to efa25f7

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
dtolnay/rust-toolchain	action	digest	0b1efab → efa25f7

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Configuration

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[bitwarden-bot]

Internal tracking:

• ID: PM-30062
• Link: https://bitwarden.atlassian.net/browse/PM-30062

[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 62.75%. Comparing base (7c3c186) to head (9f6b023).
⚠️ Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #119   +/-   ##
=======================================
  Coverage   62.75%   62.75%           
=======================================
  Files           4        4           
  Lines         537      537           
=======================================
  Hits          337      337           
  Misses        200      200           

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