chore(deps): bump thiserror from 1.0.63 to 1.0.68

Bumps [thiserror](https://github.com/dtolnay/thiserror) from 1.0.63 to 1.0.68.
- [Release notes](https://github.com/dtolnay/thiserror/releases)
- [Commits](dtolnay/thiserror@1.0.63...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

@@ -26,7 +26,7 @@ serde = { version = "1.0.204", features = ["derive"] }
 serde_jcs = "0.1.0"
 serde_json = "1.0.120"
 sha2 = "0.10.8"
-thiserror = "1.0.63"
+thiserror = "1.0.68"
 trait-variant = "0.1.2"
 x25519-dalek = { version = "2.0.1", features = ["static_secrets"] }
 zeroize = "1.8.1"