Bump mio from 0.7.11 to 0.7.13

Bumps [mio](https://github.com/tokio-rs/mio) from 0.7.11 to 0.7.13.
- [Release notes](https://github.com/tokio-rs/mio/releases)
- [Changelog](https://github.com/tokio-rs/mio/blob/v0.7.13/CHANGELOG.md)
- [Commits](https://github.com/tokio-rs/mio/compare/v0.7.11...v0.7.13)

---
updated-dependencies:
- dependency-name: mio
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Cargo.toml

@@ -37,7 +37,7 @@ rand = { version = "0.8.3", package = "rand" }
 rand-old = { package = "rand", version = "0.7.0" } # For ed25519-dalek
 sqlite = "0.26.0"
 uuid = { version = "0.8.2", features = ["serde", "v4"] }
-mio = { version = "0.7.11", features = ["os-poll", "net"] }
+mio = { version = "0.7.13", features = ["os-poll", "net"] }
 derive_more = "0.99.14"
 lazy_static = "1.4.0"