Bump thiserror from 1.0.66 to 1.0.68

Bumps [thiserror](https://github.com/dtolnay/thiserror) from 1.0.66 to 1.0.68.
- [Release notes](https://github.com/dtolnay/thiserror/releases)
- [Commits](dtolnay/thiserror@1.0.66...1.0.68)

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

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

Author: dependabot[bot]

Cargo.lock

@@ -21,4 +21,4 @@ pyo3 = { version = "0.22.5", features = ["extension-module"] }
 roxmltree = "0.20.0"
 serde = { version = "1.0.214", features = ["derive"] }
 serde-xml-rs = "0.6.0"
-thiserror = "1.0.66"
+thiserror = "1.0.68"