Bump pkg-config from 0.3.19 to 0.3.20 in /fog/ingest/enclave/trusted (#…

…1069)

Bumps [pkg-config](https://github.com/rust-lang/pkg-config-rs) from 0.3.19 to 0.3.20.
- [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](rust-lang/pkg-config-rs@0.3.19...0.3.20)

---
updated-dependencies:
- dependency-name: pkg-config
  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>