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MINOR: Add laurentgo to contributors list (#43140)

### Rationale for this change

@ laurentgo has been making significant contributions to Java's build system. This will allow them to run crossbow via GH actions for a faster test cycle.

### What changes are included in this PR?

* Add @ laurentgo to .asf.yaml

### Are these changes tested?

n/a

### Are there any user-facing changes?

No.

Authored-by: Dane Pitkin <dpitkin@apache.org>
Signed-off-by: David Li <li.davidm96@gmail.com>