Update orjson requirement from >=3.11.5 to >=3.11.8

[dependabot]

Updates the requirements on orjson to permit the latest version.

Release notes

Sourced from orjson's releases.

3.11.8

Changed

• Build and compatibility improvements.

Changelog

Sourced from orjson's changelog.

3.11.8 - 2026-03-31

Changed

• Build and compatibility improvements.

3.11.7 - 2026-02-02

Changed

• Use a faster library to serialize float. Users with byte-exact regression tests should note positive exponents are now written using a +, e.g., 1.2e+30 instead of 1.2e30. Both formats are spec-compliant.
• ABI compatibility with CPython 3.15 alpha 5 free-threading.

3.11.6 - 2026-01-29

Changed

• orjson now includes code licensed under the Mozilla Public License 2.0 (MPL-2.0).
• Drop support for Python 3.9.
• ABI compatibility with CPython 3.15 alpha 5.
• Build now depends on Rust 1.89 or later instead of 1.85.

Fixed

• Fix sporadic crash serializing deeply nested list of dict.

3.11.5 - 2025-12-06

Changed

• Show simple error message instead of traceback when attempting to build on unsupported Python versions.

3.11.4 - 2025-10-24

Changed

• ABI compatibility with CPython 3.15 alpha 1.
• Publish PyPI wheels for 3.14 and manylinux i686, manylinux arm7, manylinux ppc64le, manylinux s390x.
• Build now requires a C compiler.

3.11.3 - 2025-08-26

... (truncated)

Commits

• 5cbb3d0 3.11.8
• 4195d7f writer::half
• d00641b writer::uuid
• c84d9b4 build and compatibility misc
• 4547234 ffi::numpy
• 0d4a5ad datetime PyRef idiom
• e93a13d Cross-compile avoids maturin v1.12 build-details.json error
• ec2b066 3.11.7
• 1ca01f7 zmij
• 1716a22 cargo update
• Additional commits viewable in compare view

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