[fern-replay] Applied customizations

Patches applied (2):
  - patch-066ff9e0: docs: add v6 migration guide for breaking changes in v6.0.0 (#1368)
  - patch-d8faf7a2: docs: update v6 migration guide with federatedConnectionsTokensets and federated_connections_access_tokens breaking changes (#1370)

Patches absorbed by generator (1):
  - patch-a823058b: Release v6.0.0 (#1371)
    The generator now produces these customizations natively.

Author: fern-api[bot]