Merge latest (v5.4.1) into develop

[cptanalatriste]

✅ Checklist

• You have given your pull request a meaningful title (e.g. Enable foobar integration rather than 515 foobar).
• You are targeting the appropriate branch. If you're not certain which one this is, it should be develop.
• Your branch is up-to-date with the target branch (it probably was when you started, but it may have changed since then).

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⤴️ Summary

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🔬 Tests

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Coverage report

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File	Statements	Missing	Coverage	Coverage (new stmts)	Lines missing
data_safe_haven
version.py
data_safe_haven/config
config_sections.py
data_safe_haven/infrastructure/programs/sre
dns_sidecar.py					67-77
Project Total

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