Bump tendril from 0.4.2 to 0.4.3

Bumps [tendril](https://github.com/servo/tendril) from 0.4.2 to 0.4.3.
- [Release notes](https://github.com/servo/tendril/releases)
- [Commits](https://github.com/servo/tendril/compare/v0.4.2...v0.4.3)

---
updated-dependencies:
- dependency-name: tendril
  dependency-type: indirect
  update-type: version-update:semver-patch
...

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

Cargo.lock

@@ -6525,9 +6525,9 @@ dependencies = [
 
 [[package]]
 name = "tendril"
-version = "0.4.2"
+version = "0.4.3"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "a9ef557cb397a4f0a5a3a628f06515f78563f2209e64d47055d9dc6052bf5e33"
+checksum = "d24a120c5fc464a3458240ee02c299ebcb9d67b5249c8848b09d639dca8d7bb0"
 dependencies = [
  "encoding_rs",
  "futf",