Bump SONAME of libzfs and libzpool

The ABI of libzfs and libzpool have breaking changes since last
SONAME bump in commit fe6babc:

• libzfs: zpool_print_unsup_feat removed (used by zpool cmd).
• libzpool: multiple ddt_* symbols removed (used by zdb cmd).

Bump them to avoid ABI breakage.

See: https://github.com/openzfs/zfs/pull/11817
Reviewed-by: Brian Behlendorf <behlendorf1@llnl.gov>
Signed-off-by: Shengqi Chen <harry-chen@outlook.com>
Closes #16609