build(deps): bump serde_yaml from 0.8.13 to 0.9.25

Bumps [serde_yaml](https://github.com/dtolnay/serde-yaml) from 0.8.13 to 0.9.25.
- [Release notes](https://github.com/dtolnay/serde-yaml/releases)
- [Commits](dtolnay/serde-yaml@0.8.13...0.9.25)

---
updated-dependencies:
- dependency-name: serde_yaml
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Cargo.lock

@@ -14,7 +14,7 @@ lazy_static = "1.4.0"
 log = { version = "0.4.8", features = ["std"] }
 nix = "0.20"
 serde = { version = "1.0", features = ["derive"] }
-serde_yaml = "0.8"
+serde_yaml = "0.9"
 serde_json = "1.0"
 vtok_common = { path = "../vtok_common" }
 vtok_rpc = { path = "../vtok_rpc" }