Bump derivative from 2.1.3 to 2.2.0

[dependabot[bot]]

Bumps derivative from 2.1.3 to 2.2.0.

Changelog

Sourced from derivative's changelog.

2.2.0

• Add support for deriving traits on repr(packed) types (#84).
• Fix bug with Debug bounds (#83).
• Migrate documentation to mdbook and fix issues found in examples (#83).

Commits

• See full diff in compare view

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[mergify[bot]]

bors r+

[bors[bot]]

Build failed:

• build (x86_64-unknown-linux-gnu)