bump imglib2-label-multisets

[cmhulbert]

Add more functionality to LabelMultisetType and refactor serialization/deserialization. Fix a serialization related bug from 0.12.0

[ctrueden]

The n5-ij component failed in the melting pot, with error:

Error:    MetadataTests.testN5ViewerMetadata:140 discovery node count with single scale metadata expected:<4> but was:<0>

But when I try to reproduce the issue with mvn clean test -Dimglib2-label-multisets.version=0.13.0 in a local up-to-date clone of n5-ij, the tests all pass for me.

So I'm running the melting pot locally to see whether the failure happens for me that way.

[cmhulbert]

Thanks @ctrueden , I also was not able to duplicate it locally when manually pulling in the version bump for n5-ij. Let me know if there is anything that needs to be done.

[ctrueden]

The melting pot all passed locally for me, so I'm going to merge this. Let's find out if the failure happens again! 😂