feat: add support for Service.trustZone

[VanL]

Adds the optional trust_zone field to Service, available in CycloneDX v1.5 and later. Serializes as trustZone in JSON and <trustZone> in XML for schemas 1.5, 1.6, and 1.7; omitted for earlier versions.

Implements part of issue #578.

Description

Adds the optional trust_zone field to Service, available in
CycloneDX v1.5 and later. Serializes as trustZone in JSON and
<trustZone> in XML for schemas 1.5/1.6/1.7; omitted for earlier
versions.

Resolves a part of: #578

AI Tool Disclosure

• My contribution does not include any AI-generated content
• My contribution includes AI-generated content, as disclosed below:
  • AI Tools: Codex, Claude Code
  • LLMs and versions: Opus 4.7, Codex 5.5 (XHigh)
  • Prompts: Reviewed the existing TODO in cyclonedx/model/service.py:242-251,
    drafted an implementation plan, and implemented per the CycloneDX 1.5+
    service.trustZone schema. Implemented multiple agent adversarial review.

Affirmation

• My code follows the CONTRIBUTING.md guidelines

[codacy-production]

Up to standards ✅

🟢 Issues 0 issues

Results:
0 new issues

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🟢 Metrics 0 complexity · 0 duplication

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Complexity	0
Duplication	0

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[read-the-docs-community]

Documentation build overview

📚 CycloneDX Python Library | 🛠️ Build #32992023 | 📁 Comparing 3fb2d66 against latest (0daf3f9)

  🔍 Preview build  

3 files changed

± changelog.html
± genindex.html
± autoapi/cyclonedx/model/service/index.html

[Copilot]

Pull request overview

Adds CycloneDX v1.5+ support for Service.trustZone (Python attribute trust_zone) in the Service model, ensuring it serializes/deserializes correctly and is omitted for earlier schema versions.

Changes:

• Added optional trust_zone: Optional[str] to cyclonedx.model.service.Service, with schema-version-gated serialization (v1.5+ only) and XML normalized-string handling.
• Added/updated JSON and XML output validation tests to confirm presence/absence by schema version and schema rejection for pre-1.5 documents.
• Updated deserialization tests and snapshot fixtures/models to include trustZone for v1.5–v1.7 outputs.

Reviewed changes

Copilot reviewed 13 out of 13 changed files in this pull request and generated no comments.

Show a summary per file

File	Description
cyclonedx/model/service.py	Introduces trust_zone property with v1.5+ serialization views and normalized XML string handling; updates equality/hash tuple.
tests/test_output_xml.py	Adds XML output tests for trustZone across schema versions, including normalization and pre-1.5 rejection validation.
tests/test_output_json.py	Adds JSON output tests for trustZone across schema versions and pre-1.5 rejection validation.
tests/test_model_service.py	Adds model-level tests for default/setter behavior and equality/sorted-set membership impact.
tests/test_deserialize_xml.py	Adds XML deserialization test for trustZone (v1.7).
tests/test_deserialize_json.py	Adds JSON deserialization test and JSON→XML roundtrip test preserving trust_zone.
tests/_data/models.py	Updates complex services fixture to set trust_zone so snapshots include the new field where applicable.
tests/_data/snapshots/get_bom_with_services_complex-1.5.xml.bin	Snapshot updated to include <trustZone> for schema v1.5.
tests/_data/snapshots/get_bom_with_services_complex-1.5.json.bin	Snapshot updated to include trustZone for schema v1.5.
tests/_data/snapshots/get_bom_with_services_complex-1.6.xml.bin	Snapshot updated to include <trustZone> for schema v1.6.
tests/_data/snapshots/get_bom_with_services_complex-1.6.json.bin	Snapshot updated to include trustZone for schema v1.6.
tests/_data/snapshots/get_bom_with_services_complex-1.7.xml.bin	Snapshot updated to include <trustZone> for schema v1.7.
tests/_data/snapshots/get_bom_with_services_complex-1.7.json.bin	Snapshot updated to include trustZone for schema v1.7.

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[jkowalleck]

please rebase onto latest main branch