Bump linked-hash-map from 0.5.4 to 0.5.6 (#1224)

Bumps [linked-hash-map](https://github.com/contain-rs/linked-hash-map) from 0.5.4 to 0.5.6.
- [Release notes](https://github.com/contain-rs/linked-hash-map/releases)
- [Commits](https://github.com/contain-rs/linked-hash-map/commits/v0.5.6)

---
updated-dependencies:
- dependency-name: linked-hash-map
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

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

Cargo.lock

@@ -1098,9 +1098,9 @@ dependencies = [
 
 [[package]]
 name = "linked-hash-map"
-version = "0.5.4"
+version = "0.5.6"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "7fb9b38af92608140b86b693604b9ffcc5824240a484d1ecd4795bacb2fe88f3"
+checksum = "0717cef1bc8b636c6e1c1bbdefc09e6322da8a9321966e8928ef80d20f7f770f"
 
 [[package]]
 name = "local-encoding"