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.lock

@@ -617,9 +617,9 @@ dependencies = [
 
 [[package]]
 name = "mio"
-version = "0.7.11"
+version = "0.7.13"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "cf80d3e903b34e0bd7282b218398aec54e082c840d9baf8339e0080a0c542956"
+checksum = "8c2bdb6314ec10835cd3293dd268473a835c02b7b352e788be788b3c6ca6bb16"
 dependencies = [
  "libc",
  "log",