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GH-38990: [Java] Upgrade to flatc version 23.5.26 (#38991)

### Rationale for this change

Upgrade flatc version to match the C++ implementation.

### What changes are included in this PR?

* flatc upgraded to v23.5.26 and flatbuffer files regenerated

### Are these changes tested?

Tested via CI/unit tests

### Are there any user-facing changes?

Yes, but it's highly unlikely any user will use the flatbuffers directly.
* Closes: #38990

Authored-by: Dane Pitkin <dane@voltrondata.com>
Signed-off-by: David Li <li.davidm96@gmail.com>