Build: Bump Avro Version to Avro 1.12.2

### Feature Request / Improvement Upgrade Avro Version to 1.12.2 There is some hardening which may break things; running the build against their RC should find these. [Some spark tests fail](https://lists.apache.org/thread/9lyz48mjkrs6txvzz9svokg9dkd240xz), apparently. ### Query engine None ### Willingness to contribute - [x] I can contribute this improvement/feature independently - [ ] I would be willing to contribute this improvement/feature with guidance from the Iceberg community - [ ] I cannot contribute this improvement/feature at this time