build(deps): bump insta from 1.21.1 to 1.21.2

Bumps [insta](https://github.com/mitsuhiko/insta) from 1.21.1 to 1.21.2.
- [Release notes](https://github.com/mitsuhiko/insta/releases)
- [Changelog](https://github.com/mitsuhiko/insta/blob/master/CHANGELOG.md)
- [Commits](mitsuhiko/insta@1.21.1...1.21.2)

---
updated-dependencies:
- dependency-name: insta
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Cargo.lock

@@ -12,5 +12,5 @@ num-derive = "0.3.3"
 num-traits = "0.2.15"
 
 [dev-dependencies]
-insta = "1.21.1"
+insta = "1.21.2"
 naga = { version = "0.10.0", features = ["wgsl-out", "validate"] }