build(deps): bump smallvec from 1.6.1 to 1.7.0 (#813)

Bumps [smallvec](https://github.com/servo/rust-smallvec) from 1.6.1 to 1.7.0.
- [Release notes](https://github.com/servo/rust-smallvec/releases)
- [Commits](https://github.com/servo/rust-smallvec/compare/v1.6.1...v1.7.0)

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

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

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

Cargo.lock

@@ -970,9 +970,9 @@ dependencies = [
 
 [[package]]
 name = "smallvec"
-version = "1.6.1"
+version = "1.7.0"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "fe0f37c9e8f3c5a4a66ad655a93c74daac4ad00c441533bf5c6e7990bb42604e"
+checksum = "1ecab6c735a6bb4139c0caafd0cc3635748bbb3acf4550e8138122099251f309"
 
 [[package]]
 name = "str-buf"

helix-core/Cargo.toml

@@ -16,7 +16,7 @@ include = ["src/**/*", "README.md"]
 helix-syntax = { version = "0.4", path = "../helix-syntax" }
 
 ropey = "1.3"
-smallvec = "1.4"
+smallvec = "1.7"
 tendril = "0.4.2"
 unicode-segmentation = "1.8"
 unicode-width = "0.1"