build(deps): bump once_cell from 1.18.0 to 1.19.0 (#224)

Bumps [once_cell](https://github.com/matklad/once_cell) from 1.18.0 to 1.19.0.
- [Changelog](https://github.com/matklad/once_cell/blob/master/CHANGELOG.md)
- [Commits](matklad/once_cell@v1.18.0...v1.19.0)

---
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

@@ -12,7 +12,7 @@ chrono ="^0.4"
 clap = { version = "^4.4", features = ["derive"] }
 futures = "^0.3"
 matrix-sdk = { version = "^0.6", optional = true }
-once_cell = "^1.18"
+once_cell = "^1.19"
 regex = "^1.10"
 ruma = "^0.8"
 tokio = { version = "^1.34", features = ["full"] }