chore: Bump futures from 0.3.25 to 0.3.26 (#1268)

Bumps [futures](https://github.com/rust-lang/futures-rs) from 0.3.25 to 0.3.26.
- [Release notes](https://github.com/rust-lang/futures-rs/releases)
- [Changelog](https://github.com/rust-lang/futures-rs/blob/master/CHANGELOG.md)
- [Commits](rust-lang/futures-rs@0.3.25...0.3.26)

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

Signed-off-by: dependabot[bot] <support@github.com>
Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

Author: dependabot[bot]

Cargo.lock

@@ -19,7 +19,7 @@ async-smtp = { version = "0.6.0", features = ["socks5"] }
 async-std = "1.12.0"
 async-std-resolver = "0.21.2"
 fantoccini = { version = "0.19.3", optional = true }
-futures = { version = "0.3.25", optional = true }
+futures = { version = "0.3.26", optional = true }
 fast-socks5 = "0.8.1"
 log = "0.4.17"
 mailchecker = "5.0.7"