Bump smallvec from 1.14.0 to 1.15.0 (#1320)

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

@@ -58,7 +58,7 @@ semver = "1.0"
 serde = { version = "1.0", features = ["derive"] }
 serde_json = "1.0"
 simplelog = "0.12"
-smallvec = "1.14"
+smallvec = "1.15"
 symbolic-common = "12.14"
 symbolic-demangle = { version = "12.14", default-features = false }
 tabled = "0.18"