Update esp-println requirement

Updates the requirements on [esp-println](https://github.com/esp-rs/esp-hal) to permit the latest version.

Updates `esp-println` to 0.13.0
- [Release notes](https://github.com/esp-rs/esp-hal/releases)
- [Changelog](https://github.com/esp-rs/esp-hal/blob/v0.13.0/CHANGELOG.md)
- [Commits](esp-rs/esp-hal@v0.12.0...v0.13.0)

---
updated-dependencies:
- dependency-name: esp-println
  dependency-type: direct:production
  dependency-group: cargo
...

Signed-off-by: dependabot[bot] <[email protected]>

tests/xtensa/Cargo.toml

@@ -10,7 +10,7 @@ portable-atomic = { path = "../..", features = ["float"] }
 paste = "1"
 
 [target.xtensa-esp32s2-none-elf.dependencies]
-esp-println = { version = "0.12", default-features = false, features = ["uart", "esp32s2"] }
+esp-println = { version = "0.13", default-features = false, features = ["uart", "esp32s2"] }
 esp-hal = { git = "https://github.com/taiki-e/esp-hal.git", branch = "dev", features = ["esp32s2"] }
 
 [workspace]