build(deps): update @wmfs/pg-delta-file requirement from 1.5.0 to 1.6.0

Updates the requirements on [@wmfs/pg-delta-file](https://github.com/wmfs/pg-delta-file) to permit the latest version.
- [Release notes](https://github.com/wmfs/pg-delta-file/releases)
- [Changelog](https://github.com/wmfs/pg-delta-file/blob/master/CHANGELOG.md)
- [Commits](https://github.com/wmfs/pg-delta-file/commits/v1.6.0)

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

package.json

@@ -27,7 +27,7 @@
     "dottie": "2.0.0",
     "lodash": "4.17.10",
     "@wmfs/hl-pg-client": "1.4.0",
-    "@wmfs/pg-delta-file": "1.5.0",
+    "@wmfs/pg-delta-file": "1.6.0",
     "@wmfs/pg-diff-sync": "1.2.0",
     "@wmfs/pg-info": "1.3.0",
     "@wmfs/pg-model": "1.5.0",