Bump pkg-config from 0.3.14 to 0.3.19

Bumps [pkg-config](https://github.com/rust-lang/pkg-config-rs) from 0.3.14 to 0.3.19.
- [Release notes](https://github.com/rust-lang/pkg-config-rs/releases)
- [Changelog](https://github.com/rust-lang/pkg-config-rs/blob/master/CHANGELOG.md)
- [Commits](https://github.com/rust-lang/pkg-config-rs/compare/0.3.14...0.3.19)

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

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

Cargo.lock

@@ -4641,9 +4641,9 @@ dependencies = [
 
 [[package]]
 name = "pkg-config"
-version = "0.3.14"
+version = "0.3.19"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "676e8eb2b1b4c9043511a9b7bea0915320d7e502b0a079fb03f9635a5252b18c"
+checksum = "3831453b3449ceb48b6d9c7ad7c96d5ea673e9b470a1dc578c2ce6521230884c"
 
 [[package]]
 name = "plane-split"
@@ -4948,12 +4948,6 @@ version = "1.0.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
 checksum = "2b5ceb840e4009da4841ed22a15eb49f64fdd00a2138945c5beacf506b2fb5ed"
 
-[[package]]
-name = "ref_slice"
-version = "1.2.0"
-source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "4e1b7878800220a76a08f32c057829511440f65528b63b940f2f2bc145d7ac68"
-
 [[package]]
 name = "regex"
 version = "1.4.5"
@@ -5162,7 +5156,6 @@ dependencies = [
  "pixels",
  "profile_traits",
  "ref_filter_map",
- "ref_slice",
  "regex",
  "script_layout_interface",
  "script_plugins",