Update function-schemata sub-module to HEAD (6a1cb35)
New changes:
38d570f Add error formatting to schemata validation
2976c6c definitions: [Z13] Convert Z2K2 to canonical form
79bf798 definitions: [Z132] Fix key's label to be a Z12 not Z32
6a8e02b build: Split lint command out
56d826c definitions: Correct types of some error arguments
6a1cb35 Validate generic objects using a hybrid of JS and AJV validation.
Bug: T287737
Bug: T292168
Bug: T292215
Change-Id: Iad9b1f0458ad062c90ce53199626459ddaf3c629