Bump plexapi from 4.12.1 to 4.13.1 (#1888)

Bumps [plexapi](https://github.com/pkkid/python-plexapi) from 4.12.1 to 4.13.1.
- [Release notes](https://github.com/pkkid/python-plexapi/releases)
- [Commits](https://github.com/pkkid/python-plexapi/compare/4.12.1...4.13.1)

---
updated-dependencies:
- dependency-name: plexapi
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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[skip ci]

lib/plexapi/sonos.py

@@ -96,9 +96,7 @@ class PlexSonosClient(PlexClient):
                 {
                     "type": "music",
                     "providerIdentifier": "com.plexapp.plugins.library",
-                    "containerKey": "/playQueues/{}?own=1".format(
-                        playqueue.playQueueID
-                    ),
+                    "containerKey": f"/playQueues/{playqueue.playQueueID}?own=1",
                     "key": media.key,
                     "offset": offset,
                     "machineIdentifier": media._server.machineIdentifier,