Update README.md

COSNet Semantic Segmentation on:
- ZeroWaste-f
- SpectralWaste (RGB only)
- ADE20k

Paper Link: [COSNet: A Novel Semantic Segmentation Network using Enhanced Boundaries in Cluttered Scenes](https://arxiv.org/abs/2410.24139)

README.md

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-license: apache-2.0
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+license: apache-2.0
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