spanner spanner/v1.25.0

Features

• spanner/spansql: add support for STARTS_WITH function (#4670) (7a56af0), refs #4661
• spanner: add support for JSON data type (#4104) (ade8ab1)

Bug Fixes

• spanner/spannertest: Fix the "LIKE" clause handling for prefix and suffix matches (#4655) (a2118f0)
• spanner: invalid numeric should throw an error (#3926) (cde8697)