Summary

• sync jsonb_jsonpath.out from PostgreSQL commit edc095a2652971d6b2a95082c22dbdf34fc01d30
• implement the additional SQL/JSON 2023 item methods, numeric precision, and datetime precision/time-zone behavior
• update the PostgreSQL regression adapter for session time zones, syntax errors, and newer SQL forms

Testing

• cargo test --all-targets --all-features
• cargo clippy --all-targets --all-features -- -D warnings
• cargo test --doc --all-features

PostgreSQL regression result: 905 passed, 0 failed, 11 ignored.