chore: bump up Rust crate walrus to 0.22

[renovate]

This PR contains the following updates:

Package	Type	Update	Change
walrus	workspace.dependencies	minor	0.21 -> 0.22

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Release Notes

rustwasm/walrus (walrus)

v0.22.0

Compare Source

What's Changed

• feat: remove non_exhaustive from Instr enum by @​guybedford in https://github.com/rustwasm/walrus/pull/277
• bump: 0.22 release prep with macro crate by @​guybedford in https://github.com/rustwasm/walrus/pull/278

Full Changelog: rustwasm/walrus@0.21.3...0.22.0

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