cargo: bump once_cell from 1.12.0 to 1.13.0

Bumps [once_cell](https://github.com/matklad/once_cell) from 1.12.0 to 1.13.0.
- [Release notes](https://github.com/matklad/once_cell/releases)
- [Changelog](https://github.com/matklad/once_cell/blob/master/CHANGELOG.md)
- [Commits](https://github.com/matklad/once_cell/compare/v1.12.0...v1.13.0)

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

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

Cargo.lock

@@ -2096,9 +2096,9 @@ dependencies = [
 
 [[package]]
 name = "once_cell"
-version = "1.12.0"
+version = "1.13.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7709cef83f0c1f58f666e746a08b21e0085f7440fa6a29cc194d68aac97a4225"
+checksum = "18a6dbe30758c9f83eb00cbea4ac95966305f5a7772f3f42ebfc7fc7eddbd8e1"
 
 [[package]]
 name = "oorandom"

Cargo.toml

@@ -46,7 +46,7 @@ native-tls = "0.2"
 num_cpus = "1.13"
 num-derive = "0.3"
 num-traits = "0.2"
-once_cell = "1.12.0"
+once_cell = "1.13.0"
 percent-encoding = "2.0"
 pgp = { version = "0.8", default-features = false }
 pretty_env_logger = { version = "0.4", optional = true }

deltachat-ffi/Cargo.toml

@@ -24,7 +24,7 @@ tokio = { version = "1", features = ["rt-multi-thread"] }
 anyhow = "1"
 thiserror = "1"
 rand = "0.7"
-once_cell = "1.12.0"
+once_cell = "1.13.0"
 
 [features]
 default = ["vendored"]