avro

Bump snappy-java from 1.1.8.1 to 1.1.8.2 in /lang/java (#1026)

Bumps [snappy-java](https://github.com/xerial/snappy-java) from 1.1.8.1 to 1.1.8.2.
- [Release notes](https://github.com/xerial/snappy-java/releases)
- [Commits](https://github.com/xerial/snappy-java/compare/1.1.8.1...1.1.8.2)

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