Bump futures from 0.3.21 to 0.3.25

Bumps [futures](https://github.com/rust-lang/futures-rs) from 0.3.21 to 0.3.25.
- [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@0.3.21...0.3.25)

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

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

Cargo.lock

@@ -17,7 +17,7 @@ actix-cors = "0.6.1"
 ts-rs = { git = "https://github.com/Aleph-Alpha/ts-rs", branch = "main", features = [
     "serde-compat",
 ] }
-futures = "0.3.21"
+futures = "0.3.25"
 hubcaps = "0.6.2"
 tokio-compat-02 = "0.2.0"