Update serde_derive_internals requirement from 0.28 to 0.29 (#66)

Updates the requirements on [serde_derive_internals](https://github.com/serde-rs/serde) to permit the latest version.
- [Release notes](https://github.com/serde-rs/serde/releases)
- [Commits](https://github.com/serde-rs/serde/commits)

---
updated-dependencies:
- dependency-name: serde_derive_internals
  dependency-type: direct:production
...

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

Author: dependabot[bot]

derive/Cargo.toml

@@ -17,6 +17,6 @@ proc-macro = true
 [dependencies]
 proc-macro2 = "1.0"
 quote = "1.0"
-serde_derive_internals = "0.28"
+serde_derive_internals = "0.29"
 syn = "2.0"
 syn-path = "2.0"