Bump once_cell from 1.19.0 to 1.21.3

Bumps [once_cell](https://github.com/matklad/once_cell) from 1.19.0 to 1.21.3.
- [Changelog](https://github.com/matklad/once_cell/blob/master/CHANGELOG.md)
- [Commits](matklad/once_cell@v1.19.0...v1.21.3)

---
updated-dependencies:
- dependency-name: once_cell
  dependency-version: 1.21.3
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Cargo.lock

@@ -890,7 +890,7 @@ num-format = { version = "0.4.3" }
 num-rational = { version = "0.4.1" }
 num-traits = { version = "0.2.17", default-features = false }
 num_cpus = { version = "1.13.1" }
-once_cell = { version = "1.19.0" }
+once_cell = { version = "1.21.3" }
 orchestra = { version = "0.4.0", default-features = false }
 pallet-alliance = { path = "substrate/frame/alliance", default-features = false }
 pallet-asset-conversion = { path = "substrate/frame/asset-conversion", default-features = false }