chore: bump mgba digest to b256448

This MR contains the following updates:

Package	Update	Change
mgba	digest	314bf7b -> b256448

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🗒Changelog
Compare revision 314bf7b676f5b820f396209eb0c7d6fbe8103486 to b2564482c86378581a7a43ef4e254b2a75167bc7

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