build(deps): bump serial_test from 3.2.0 to 3.4.0

Bumps [serial_test](https://github.com/palfrey/serial_test) from 3.2.0 to 3.4.0.
- [Release notes](https://github.com/palfrey/serial_test/releases)
- [Commits](https://github.com/palfrey/serial_test/compare/v3.2.0...v3.4.0)

---
updated-dependencies:
- dependency-name: serial_test
  dependency-version: 3.4.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Cargo.lock

@@ -1530,11 +1530,12 @@ dependencies = [
 
 [[package]]
 name = "serial_test"
-version = "3.2.0"
+version = "3.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "1b258109f244e1d6891bf1053a55d63a5cd4f8f4c30cf9a1280989f80e7a1fa9"
+checksum = "911bd979bf1070a3f3aa7b691a3b3e9968f339ceeec89e08c280a8a22207a32f"
 dependencies = [
- "futures",
+ "futures-executor",
+ "futures-util",
  "log",
  "once_cell",
  "parking_lot",
@@ -1544,9 +1545,9 @@ dependencies = [
 
 [[package]]
 name = "serial_test_derive"
-version = "3.2.0"
+version = "3.4.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "5d69265a08751de7844521fd15003ae0a888e035773ba05695c5c759a6f89eef"
+checksum = "0a7d91949b85b0d2fb687445e448b40d322b6b3e4af6b44a29b21d9a5f33e6d9"
 dependencies = [
  "proc-macro2",
  "quote",