build(deps): bump pkg-config from 0.3.28 to 0.3.29

Bumps [pkg-config](https://github.com/rust-lang/pkg-config-rs) from 0.3.28 to 0.3.29.
- [Changelog](https://github.com/rust-lang/pkg-config-rs/blob/master/CHANGELOG.md)
- [Commits](rust-lang/pkg-config-rs@0.3.28...0.3.29)

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

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

Author: dependabot[bot]

Cargo.lock

@@ -1,5 +1,5 @@
 [build-dependencies]
-pkg-config = "0.3.28"
+pkg-config = "0.3.29"
 system-deps = "6"
 
 [dependencies]