cargo: bump the cargo-dependencies group with 2 updates

Bumps the cargo-dependencies group with 2 updates: [indexmap](https://github.com/indexmap-rs/indexmap) and [syn](https://github.com/dtolnay/syn).


Updates `indexmap` from 2.2.3 to 2.2.4
- [Changelog](https://github.com/indexmap-rs/indexmap/blob/master/RELEASES.md)
- [Commits](indexmap-rs/indexmap@2.2.3...2.2.4)

Updates `syn` from 2.0.51 to 2.0.52
- [Release notes](https://github.com/dtolnay/syn/releases)
- [Commits](dtolnay/syn@2.0.51...2.0.52)

---
updated-dependencies:
- dependency-name: indexmap
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: cargo-dependencies
- dependency-name: syn
  dependency-type: direct:production
  update-type: version-update:semver-patch
  dependency-group: cargo-dependencies
...

Signed-off-by: dependabot[bot] <[email protected]>

Cargo.toml

@@ -55,7 +55,7 @@ gix = { version = "0.58.0", default-features = false, features = [
 glob = "0.3.1"
 hex = "0.4.3"
 ignore = "0.4.20"
-indexmap = "2.2.3"
+indexmap = "2.2.4"
 insta = { version = "1.35.1", features = ["filters"] }
 itertools = "0.12.1"
 libc = { version = "0.2.153" }
@@ -89,7 +89,7 @@ smallvec = { version = "1.13.0", features = [
     "union",
 ] }
 strsim = "0.11.0"
-syn = "2.0.51"
+syn = "2.0.52"
 tempfile = "3.10.1"
 test-case = "3.3.1"
 textwrap = "0.16.1"