ARROW-8319: [CI] Install thrift compiler in the debian build
ARROW-8319: [CI] Install thrift compiler in the debian build

After [setting](https://github.com/apache/arrow/commit/156d449f0a82e7ef830f8510309e6a8cdf29966f#diff-8f85d961ec4381b4cf136e3cea1b1791R124) `Thrift_SOURCE` to empty from `AUTO` the compiler cannot be found. Previously it was automatically using the bundled build az a fallback.

Closes #6818 from kszucs/ARROW-8319

Authored-by: Krisztián Szűcs <6bab32dc957a05a87930e779f272342e159326fa@gmail.com>
Signed-off-by: Benjamin Kietzman <be26f8d5d161e4d7965ee00602589fb2b74149f2@gmail.com>

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