Swift: Bump the swift-dependencies group with 2 updates

Bumps the swift-dependencies group with 2 updates: [github.com/apple/swift-metrics](https://github.com/apple/swift-metrics) and [github.com/vapor/postgres-kit](https://github.com/vapor/postgres-kit).


Updates `github.com/apple/swift-metrics` from 2.6.0 to 2.6.1
- [Release notes](https://github.com/apple/swift-metrics/releases)
- [Commits](apple/swift-metrics@2.6.0...2.6.1)

Updates `github.com/vapor/postgres-kit` from 2.13.5 to 2.14.0
- [Release notes](https://github.com/vapor/postgres-kit/releases)
- [Commits](vapor/postgres-kit@2.13.5...2.14.0)

---
updated-dependencies:
- dependency-name: github.com/apple/swift-metrics
  dependency-type: indirect
  update-type: version-update:semver-patch
  dependency-group: swift-dependencies
- dependency-name: github.com/vapor/postgres-kit
  dependency-type: indirect
  update-type: version-update:semver-minor
  dependency-group: swift-dependencies
...

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

Author: dependabot[bot]