chore(dep): bump the test-deps group

Bumps the test-deps group in /crates/rsonpath-test-codegen with 1 update: [proc-macro2](https://github.com/dtolnay/proc-macro2).


Updates `proc-macro2` from 1.0.76 to 1.0.78
- [Release notes](https://github.com/dtolnay/proc-macro2/releases)
- [Commits](dtolnay/proc-macro2@1.0.76...1.0.78)

---
updated-dependencies:
- dependency-name: proc-macro2
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: test-deps
...

Signed-off-by: dependabot[bot] <support@github.com>

crates/rsonpath-test-codegen/Cargo.toml

@@ -17,7 +17,7 @@ publish = false
 [dependencies]
 serde = { version = "1.0.195", features = ["derive"] }
 toml = "0.8.8"
-proc-macro2 = "1.0.76"
+proc-macro2 = "1.0.78"
 quote = "1.0.33"
 heck = { version = "0.4.1", features = ["unicode"] }
 walkdir = "2.4.0"