chore(deps): update schemars requirement from 0.8.1 to 1.2.1

[dependabot]

Updates the requirements on schemars to permit the latest version.

Release notes

Sourced from schemars's releases.

v1.2.1

Fixed

• transform attributes are now applied after the schema is otherwise fully constructed. In particular, they're now applied after all other attributes are processed. (GREsau/schemars#505)

Changelog

Sourced from schemars's changelog.

[1.2.1] - 2026-02-01

Fixed

• transform attributes are now applied after the schema is otherwise fully constructed. In particular, they're now applied after all other attributes are processed. (GREsau/schemars#505)

[1.2.0] - 2025-12-25 🎄

Added

• Add smol_str03 feature (GREsau/schemars#486)

Changed

• Schemas generated for HashMap/BTreeMap with enum keys are now more specific (GREsau/schemars#452)

[1.1.0] - 2025-11-05

Added

• Public functions that have no side-effects are now marked with #[must_use] so that they report a lint warning when the returned value is unused, as this likely indicates a mistake.

Fixed

• Improve accuracy of schemas for flattened enums, in particular: unit variants of externally-tagged enums, and enums wrapped in Option<>. (GREsau/schemars#464 / GREsau/schemars#483)

[1.0.5] - 2025-11-02

Fixed

• Fix schema.pointer_mut() to resolve URI fragment identifiers like #/$defs/foo, matching current behaviour of schema.pointer() (GREsau/schemars#478 / GREsau/schemars#479)

[1.0.4] - 2025-07-06

Fixed

• Fix JsonSchema impl on atomic types being ignored on non-nightly compilers due to a buggy cfg check (GREsau/schemars#453)
• Fix compatibility with minimal dependency versions, e.g. old(-ish) versions of syn (GREsau/schemars#450)
• Fix derive for empty tuple variants (GREsau/schemars#455)

[1.0.3] - 2025-06-28

Fixed

• Fix compile error when a doc comment is set on both a transparent (or newtype) struct and its field (GREsau/schemars#446)
• Fix json_schema!() macro compatibility when used from pre-2021 rust editions (GREsau/schemars#447)

[1.0.2] - 2025-06-26

Fixed

... (truncated)

Commits

• 5ef5da1 v1.2.1
• 4081b98 Apply extend/transform attributes after any other attributes (#506)
• 5bfec04 v1.2.0
• f6b1f4c Add smol_str03 feature (#486)
• 18826cd Add test for changes from #452
• 2ac8ff5 Added better map support (#452)
• 6009e82 Limit workflow permissions
• ac0b651 Fix title
• 97b2427 v1.1.0
• e67495b Improve optional enum flattening behaviour
• Additional commits viewable in compare view

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[sonarqubecloud]

Quality Gate passed

Issues
0 New issues
0 Accepted issues

Measures
0 Security Hotspots
0.0% Coverage on New Code
0.0% Duplication on New Code

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