fix(deps): update github.com/snapcore/snapd digest to d7c520b

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
github.com/snapcore/snapd	require	digest	788090b → d7c520b

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[codecov]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 87.39%. Comparing base (7cf4f10) to head (00301bc).

Additional details and impacted files

@@           Coverage Diff           @@
##             main      #28   +/-   ##
=======================================
  Coverage   87.39%   87.39%           
=======================================
  Files          26       26           
  Lines         682      682           
=======================================
  Hits          596      596           
  Misses         86       86           

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[renovate]

ℹ️ Artifact update notice

File name: go.mod

In order to perform the update(s) described in the table above, Renovate ran the go get command, which resulted in the following additional change(s):

• 2 additional dependencies were updated

Details:

Package	Change
github.com/snapcore/secboot	v0.0.0-20260410084611-3f8b98c2db70 -> v0.0.0-20260623135244-457b03a16d19
github.com/canonical/go-efilib	v1.7.1-0.20260310185303-7166aa858b24 -> v1.8.0