Bump async-std from 1.2.0 to 1.3.0

Bumps [async-std](https://github.com/async-rs/async-std) from 1.2.0 to 1.3.0.
- [Release notes](https://github.com/async-rs/async-std/releases)
- [Changelog](https://github.com/async-rs/async-std/blob/master/CHANGELOG.md)
- [Commits](async-rs/async-std@v1.2.0...v1.3.0)

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

Author: dependabot-preview[bot]

Cargo.lock

@@ -6,7 +6,7 @@ edition = "2018"
 
 [dependencies]
 anyhow = "1.0.25"
-async-std = "1.2.0"
+async-std = "1.3.0"
 derive_more = "0.99.2"
 dirs = "2"
 emerald-vault-core = { git = "http://github.com/thomaseizinger/emerald-vault.git", branch = "create-comit-app-compatible", default-features = false }