Update schemars requirement from 0.8 to 0.9

[dependabot]

Updates the requirements on schemars to permit the latest version.

Release notes

Sourced from schemars's releases.

v0.9.0

This version is identical to 1.0.0-alpha.18, but is available for those who are unable to unwilling to use a pre-release version.

Those upgrading from Schemars 0.8 may want to consult the migration guide, which also applies when migrating from 0.8 to 0.9.

Changelog

Sourced from schemars's changelog.

[0.9.0] - 2025-05-26

This version is identical to 1.0.0-alpha.18, but is available for those who are unable to unwilling to use a pre-release version.

Those upgrading from Schemars 0.8 may want to consult the migration guide, which also applies when migrating from 0.8 to 0.9.

[1.0.0-alpha.18] - 2025-05-26

Added

• #[schemars(inline)] attribute for inling schemas when deriving JsonSchema (GREsau/schemars#380)
• Implement JsonSchema for jiff 0.2 types, under the optional jiff02 feature flag (GREsau/schemars#364)
• Add methods to dyn GenTransform, allowing to to be used similarly to a dyn Any:
  • fn is<T>(&self) -> bool
  • fn downcast_ref<T>(&self) -> Option<&T>
  • fn downcast_mut<T>(&mut self) -> Option<&mut T>
  • fn downcast<T>(self: Box<Self>) -> Result<Box<T>, Box<Self>>
• Schemas for i8/i16/u8/u16 now include minimum and maximum properties (GREsau/schemars#298)
• schemars::transform::RestrictFormats - a Transform that removes any format values that are not defined by the JSON Schema standard (or explicitly allowed by a custom list). This can be used to remove non-standard formats from schemas.
• SchemaSettings now has an include_type_name flag. When enabled, this includes an "x-rust-type" property on generated schemas, set to the name of the schema's associated rust type.

Changed

• Rename JsonSchema::always_inline_schema() to inline_schema(), because future attributes may allow particular fields to be uninlined
• MSRV is now 1.74
• GenTransform::as_any and GenTransform::as_any are deprecated and will be removed before schemars 1.0 becomes stable.
• The generation of nullable schemas (i.e. schemas for Option<T>) has been reworked, making them more accurate. The SchemaSettings::option_nullable and SchemaSettings::option_add_null_type fields are no longer used - instead, generated schemas always include the "null" type, but this can be changed to nullable by using the new AddNullable transform.
• Update OpenAPI 3.0 meta-schema to an active URL (GREsau/schemars#394)
• Change SchemaSettings::meta_schema and SchemaSettings::definitions_path from String to Cow<'static, str>, making it easier to construct a SchemaSettings in a const context.
• The SchemaGenerator::take_definitions method now takes an apply_transforms flag, which when enabled, will apply the generator's current transforms to each of the schema values in the returned map.

[0.8.22] - 2025-02-25

Fixed:

• Fix compatibility with rust 2024 edition (GREsau/schemars#378)

[1.0.0-alpha.17] - 2024-12-02

Changed

• For newtype variants of internally-tagged enums, prefer referencing the inner type's schema via $ref instead of always inlining the schema (GREsau/schemars#355) (this change was included in the release notes for 1.0.0-alpha.16, but was accidentally excluded from the published crate)

[1.0.0-alpha.16] - 2024-11-25

Removed (⚠️ breaking changes ⚠️)

• the enumset1/enumset optional dependency has been removed, as its JsonSchema impl did not actually match the default serialization format of EnumSet (GREsau/schemars#339)

Changed (⚠️ breaking changes ⚠️)

... (truncated)

Commits

• 643a4c0 v0.9.0 (identical to v1.0.0-alpha.18)
• f9bcfd8 v1.0.0-alpha.18
• c805be1 Add include_type_name setting for setting x-rust-type schema property (#406)
• b24c841 Add RestrictFormats transform (#405)
• 04db03b Re-enable some clippy lints
• 413e4a0 Add flag to take_definitions to optionally apply transforms (#404)
• 9d58bdc Change String settings to Cow\<'static, str> (#403)
• b4c7f5e Update OpenAPI 3.0 meta-schema
• fb54a6d Deprecate as_any/as_any_mut, add downcast methods to dyn GenTransform (...
• 6a089fa Set minimum/maximum for i8/u8/i16/u16 (#401)
• Additional commits viewable in compare view

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