Correct version number for Thrift dependency.

Currently, parquet-format depends on packages and methods that are specific to libthrift 0.9.0 and not found in earlier versions. However, the dependency in pom.xml still lists version 0.7.0 (since commit d609d0393e4a8a6249f3517254f2fda51b8a9126). This results in build errors when building with mvn package.

This patch bumps the version number for the libthrift dependency to 0.9.0, which fixes the build break.