build(deps): update @wmfs/tymly-pg-plugin requirement

Updates the requirements on [@wmfs/tymly-pg-plugin](https://github.com/wmfs/tymly-pg-plugin) to permit the latest version.
- [Release notes](https://github.com/wmfs/tymly-pg-plugin/releases)
- [Changelog](https://github.com/wmfs/tymly-pg-plugin/blob/master/CHANGELOG.md)
- [Commits](https://github.com/wmfs/tymly-pg-plugin/commits/v1.64.0)

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

package.json

@@ -23,7 +23,7 @@
     "deepmerge": "2.1.1",
     "@wmfs/gazetteer-blueprint": "1.5.0",
     "@wmfs/tymly-etl-plugin": "1.53.0",
-    "@wmfs/tymly-pg-plugin": "1.63.0"
+    "@wmfs/tymly-pg-plugin": "1.64.0"
   },
   "devDependencies": {
     "chai": "4.1.2",