duckdb: Add version 1.5.6 (#2470)

Signed-off-by: riseproject-dev[bot] <330740410+riseproject-dev[bot]@users.noreply.github.com>
Co-authored-by: riseproject-dev[bot] <330740410+riseproject-dev[bot]@users.noreply.github.com>

Author: riseproject-dev[bot]

docs/packages/duckdb.yaml

@@ -14,3 +14,4 @@ versions:
   - filename: duckdb-1.5.5-cp314-cp314-manylinux_2_39_riscv64.whl
     sha256: 304d7751cccf0132d23d4a0be45d791462da946a07f4c13b8e21b035699fdd8e
     requires-python: '>=3.10.0'
+- version: 1.5.6