There will be compiling errors with older lightgbm-rs.

```
error[E0425]: cannot find function, tuple struct or tuple variant `LGBM_GetLastError` in crate `lightgbm_sys`
  --> /home/v/.cargo/git/checkouts/lightgbm-rs-8bd319b78c888ced/e20d7b9/src/error.rs:41:59
   |
41 |         let c_str = unsafe { CStr::from_ptr(lightgbm_sys::LGBM_GetLastError()) };
   |                                                           ^^^^^^^^^^^^^^^^^ not found in `lightgbm_sys`

error[E0425]: cannot find function, tuple struct or tuple variant `LGBM_DatasetCreateFromMat` in crate `lightgbm_sys`
  --> /home/v/.cargo/git/checkouts/lightgbm-rs-8bd319b78c888ced/e20d7b9/src/dataset.rs:70:34
   |
70 |         lgbm_call!(lightgbm_sys::LGBM_DatasetCreateFromMat(
   |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `lightgbm_sys`

error[E0425]: cannot find function, tuple struct or tuple variant `LGBM_DatasetSetField` in crate `lightgbm_sys`
  --> /home/v/.cargo/git/checkouts/lightgbm-rs-8bd319b78c888ced/e20d7b9/src/dataset.rs:81:34
   |
81 |         lgbm_call!(lightgbm_sys::LGBM_DatasetSetField(
   |                                  ^^^^^^^^^^^^^^^^^^^^ not found in `lightgbm_sys`

error[E0425]: cannot find function, tuple struct or tuple variant `LGBM_DatasetCreateFromMat` in crate `lightgbm_sys`
   --> /home/v/.cargo/git/checkouts/lightgbm-rs-8bd319b78c888ced/e20d7b9/src/dataset.rs:115:34
    |
115 |         lgbm_call!(lightgbm_sys::LGBM_DatasetCreateFromMat(
    |                                  ^^^^^^^^^^^^^^^^^^^^^^^^^ not found in `lightgbm_sys`
```

This patch helps bump lightgbm-rs to a newer version.