feat: update slsa to version 1.0

[danbev]

This commit updates the slsa v1.0-rc (candidate release) to v1.0.

provenance:

• _type has been updated.
• predicateType has been updated.

builder:

• version is defined as map (string->string) which is currently a string.

buildDefinition:

• systemParameters has been renamed to internalParameters

artifact-reference/ResourceDescriptor:

• localName was renamed to just name.
• content field was added.
• annotations field was added.

[danbev]

Landed in 8ba62ed34dad8aee7f772bc18c4ac9be9a7d0d69.