Update itertools requirement from 0.12 to 0.13

Updates the requirements on [itertools](https://github.com/rust-itertools/itertools) to permit the latest version.
- [Changelog](https://github.com/rust-itertools/itertools/blob/master/CHANGELOG.md)
- [Commits](rust-itertools/itertools@v0.12.0...v0.13.0)

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

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

crates/spectator/Cargo.toml

@@ -24,7 +24,7 @@ eframe = { version = "0.26", features = ["ron", "persistence"], optional = true
 egui_dock = { version = "0.11", optional = true }
 egui_extras = { version = "0.26", optional = true }
 egui_plot = { version = "0.26", optional = true }
-itertools = { version = "0.12", optional = true }
+itertools = { version = "0.13", optional = true }
 rmp-serde = "1.1.1"
 serde = { version = "1.0", features = ["derive"] }
 time = { version = "0.3", features = ["serde"] }