Update bitflags requirement from 1.2 to 2.3

[dependabot[bot]]

Updates the requirements on bitflags to permit the latest version.

Release notes

Sourced from bitflags's releases.

2.3.1

What's Changed

• Fix Self in flags value expressions by @​KodrAus in bitflags/bitflags#355
• Prepare for 2.3.1 release by @​KodrAus in bitflags/bitflags#358

Full Changelog: https://github.com/bitflags/bitflags/compare/2.3.0...2.3.1

Changelog

Sourced from bitflags's changelog.

2.3.1

What's Changed

• Fix Self in flags value expressions by @​KodrAus in bitflags/bitflags#355

Full Changelog: https://github.com/bitflags/bitflags/compare/2.3.0...2.3.1

2.3.0

What's Changed

• Support ejecting flags types from the bitflags macro by @​KodrAus in bitflags/bitflags#351

Full Changelog: https://github.com/bitflags/bitflags/compare/2.2.1...2.3.0

2.2.1

What's Changed

• Refactor attribute filtering to apply per-flag by @​KodrAus in bitflags/bitflags#345

Full Changelog: https://github.com/bitflags/bitflags/compare/2.2.0...2.2.1

2.2.0

What's Changed

• Create SECURITY.md by @​KodrAus in bitflags/bitflags#338
• add docs to describe the behavior of multi-bit flags by @​nicholasbishop in bitflags/bitflags#340
• Add support for bytemuck by @​KodrAus in bitflags/bitflags#336
• Add a top-level macro for filtering attributes by @​KodrAus in bitflags/bitflags#341

New Contributors

• @​nicholasbishop made their first contribution in bitflags/bitflags#340

Full Changelog: https://github.com/bitflags/bitflags/compare/2.1.0...2.2.0

2.1.0

What's Changed

• Add docs for the internal Field0 and examples of formatting/parsing by @​KodrAus in bitflags/bitflags#328
• Add support for arbitrary by @​KodrAus in bitflags/bitflags#324
• Fix up missing docs for consts within consts by @​KodrAus in bitflags/bitflags#330
• Ignore clippy lint in generated code by @​Jake-Shadle in bitflags/bitflags#331

New Contributors

• @​Jake-Shadle made their first contribution in bitflags/bitflags#331

Full Changelog: https://github.com/bitflags/bitflags/compare/2.0.2...2.1.0

2.0.2

What's Changed

... (truncated)

Commits

• cf01ab0 Merge pull request #358 from KodrAus/cargo/2.3.1
• 3d0c558 prepare for 2.3.1 release
• 32d406a Merge pull request #355 from KodrAus/fix/self-in-flags
• 64fc276 fix up example feature
• 8872a64 fix up clippy in CI
• 748d88c fix up clippy lints and flag exprs referring to Self
• a4b8c99 fix up custom bits test
• 4aa03b8 add regression test for Self in flags values
• 31d3e4a Merge pull request #352 from KodrAus/cargo/2.3.0
• 51e8197 prepare for 2.3.0 release
• Additional commits viewable in compare view

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