chore(deps)(deps): bump similar from 2.7.0 to 3.1.1 in /diffctx (#62)

Bumps [similar](https://github.com/mitsuhiko/similar) from 2.7.0 to 3.1.1.
- [Changelog](https://github.com/mitsuhiko/similar/blob/main/CHANGELOG.md)
- [Commits](mitsuhiko/similar@2.7.0...3.1.1)

---
updated-dependencies:
- dependency-name: similar
  dependency-version: 3.1.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

diffctx/Cargo.lock

@@ -116,7 +116,7 @@ tracing-subscriber = { version = "0.3", features = ["env-filter"] }
 regex = "1"
 once_cell = "1"
 rustc-hash = "2"
-similar = "2"
+similar = "3"
 glob = "0.3"
 smallvec = "1"
 walkdir = "2"