fix(release): ensure debuginfo file contains debugging info

[pb8o]

Seems recently Cargo defaulted to use strip=debuginfo. This inadvertently made our debuginfo files much smaller and that much less useful.

Fix the issue by using strip=none and add a test so that it breaks if this somehow changes again.

Changes

• Fix debuginfo files
• Move the test together with the static link check as they are similar.

Reason

debuginfo files can be used to troubleshoot issues, so we want to keep them functional.

License Acceptance

By submitting this pull request, I confirm that my contribution is made under
the terms of the Apache 2.0 license. For more information on following Developer
Certificate of Origin and signing off your commits, please check
CONTRIBUTING.md.

PR Checklist

• If a specific issue led to this PR, this PR closes the issue.
• The description of changes is clear and encompassing.
• Any required documentation changes (code and docs) are included in this
  PR.
• API changes follow the Runbook for Firecracker API changes.
• User-facing changes are mentioned in CHANGELOG.md.
• All added/changed functionality is tested.
• New TODOs link to an issue.
• Commits meet
  contribution quality standards.

---

• This functionality cannot be added in rust-vmm.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 84.32%. Comparing base (0661dd7) to head (54da2bf).
Report is 1 commits behind head on main.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4790   +/-   ##
=======================================
  Coverage   84.32%   84.32%           
=======================================
  Files         249      249           
  Lines       27512    27512           
=======================================
+ Hits        23199    23200    +1     
+ Misses       4313     4312    -1     

Flag	Coverage Δ
5.10-c5n.metal	84.54% <ø> (ø)
5.10-m5n.metal	84.53% <ø> (ø)
5.10-m6a.metal	83.82% <ø> (ø)
5.10-m6g.metal	80.90% <ø> (ø)
5.10-m6i.metal	84.52% <ø> (ø)
5.10-m7g.metal	80.90% <ø> (ø)
6.1-c5n.metal	84.54% <ø> (?)
6.1-m5n.metal	84.53% <ø> (?)
6.1-m6a.metal	83.82% <ø> (?)
6.1-m6g.metal	80.90% <ø> (?)
6.1-m6i.metal	84.52% <ø> (?)
6.1-m7g.metal	80.90% <ø> (?)

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