chore(deps): bump serial_test from 3.5.0 to 4.0.1

Bumps [serial_test](https://github.com/palfrey/serial_test) from 3.5.0 to 4.0.1.
- [Release notes](https://github.com/palfrey/serial_test/releases)
- [Commits](palfrey/serial_test@v3.5.0...v4.0.1)

---
updated-dependencies:
- dependency-name: serial_test
  dependency-version: 4.0.1
  dependency-type: direct:production
  update-type: version-update:semver-major
...

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

Author: dependabot[bot]

Cargo.lock

@@ -3101,9 +3101,9 @@ dependencies = [
 
 [[package]]
 name = "serial_test"
-version = "3.5.0"
+version = "4.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "699f4197115b8a7e7ff19c9a315a4bd6fffec26cc4626ef45ecaea389e081c6d"
+checksum = "a6df5ed973ad8d834e09f824f9e9f449af6b9a3745f78dec7cc752770bd3bf11"
 dependencies = [
  "futures-executor",
  "futures-util",
@@ -3115,13 +3115,13 @@ dependencies = [
 
 [[package]]
 name = "serial_test_derive"
-version = "3.5.0"
+version = "4.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "94e153fc76e1c6a068703d6d29c508a0b15c061c4b7e43da59cc097bc342673c"
+checksum = "a22144e767da4ddd8416dbf383700542ffd8a5dc493dfecedfe1fe3ad03c98ae"
 dependencies = [
  "proc-macro2",
  "quote",
- "syn 2.0.117",
+ "syn 3.0.2",
 ]
 
 [[package]]

crates/phenotype-journey-core/Cargo.toml

@@ -51,4 +51,4 @@ vision = ["dep:objc2", "dep:objc2-foundation", "dep:objc2-vision"]
 [dev-dependencies]
 serde_json = { workspace = true }
 # serial_test serialises env-var-mutating tests to prevent race conditions.
-serial_test = "3"
+serial_test = "4"