Prepare release v1.5

[roypat]

Release preparation for 1.5

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 lines are covered by tests ✅

Comparison is base (9232614) 82.99% compared to head (d67ef18) 82.99%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #4152   +/-   ##
=======================================
  Coverage   82.99%   82.99%           
=======================================
  Files         223      223           
  Lines       28448    28448           
=======================================
  Hits        23609    23609           
  Misses       4839     4839           

Flag	Coverage Δ
4.14-c7g.metal	78.53% <ø> (+<0.01%)	⬆️
4.14-m5d.metal	80.33% <ø> (ø)
4.14-m6a.metal	79.46% <ø> (ø)
4.14-m6g.metal	78.53% <ø> (ø)
4.14-m6i.metal	80.31% <ø> (ø)
5.10-c7g.metal	81.44% <ø> (ø)
5.10-m5d.metal	82.99% <ø> (-0.02%)	⬇️
5.10-m6a.metal	82.23% <ø> (ø)
5.10-m6g.metal	81.44% <ø> (ø)
5.10-m6i.metal	82.99% <ø> (+<0.01%)	⬆️
6.1-c7g.metal	81.44% <ø> (ø)
6.1-m5d.metal	83.00% <ø> (+0.01%)	⬆️
6.1-m6a.metal	82.23% <ø> (ø)
6.1-m6g.metal	81.44% <ø> (ø)
6.1-m6i.metal	82.99% <ø> (+<0.01%)	⬆️

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