Bump once_cell from 1.19.0 to 1.20.0 (#150)

Bumps [once_cell](https://github.com/matklad/once_cell) from 1.19.0 to 1.20.0.
- [Changelog](https://github.com/matklad/once_cell/blob/master/CHANGELOG.md)
- [Commits](matklad/once_cell@v1.19.0...v1.20.0)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Cargo.toml

@@ -23,7 +23,7 @@ version    = "0.11.1"
 # crates.io
 array-bytes        = { version = "6.2" }
 fxhash             = { version = "0.2" }
-once_cell          = { version = "1.19" }
+once_cell          = { version = "1.20" }
 parity-scale-codec = { version = "3.6" }
 reqwest            = { version = "0.12" }
 scale-info         = { version = "2.11" }