Bump smallvec from 1.14.0 to 1.15.0 (#191)

Bumps [smallvec](https://github.com/servo/rust-smallvec) from 1.14.0 to 1.15.0.
- [Release notes](https://github.com/servo/rust-smallvec/releases)
- [Commits](servo/rust-smallvec@v1.14.0...v1.15.0)

---
updated-dependencies:
- dependency-name: smallvec
  dependency-version: 1.15.0
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

Author: dependabot[bot]

Cargo.lock

@@ -36,7 +36,7 @@ serde = [
 [dependencies]
 serde       = { version = "1.0", optional = true, default-features = false }
 serde_bytes = { version = "0.11", optional = true, default-features = false, features = ["alloc"] }
-smallvec    = { version = "1.14" }
+smallvec    = { version = "1.15" }
 
 [dev-dependencies]
 const-hex  = { version = "1.14" }