DRILL-8435: Pin the version of Calcite in the master branch (#2804)
* Upgrade javassist -> 3.29.2-GA.
* Pin Calcite to 1.34.0 and reenable testTimestampAddDiffLiteralTypeInference.
* Adjust casting costs so that VARCHAR -> BIGINT is cheaper than VARCHAR -> FLOAT8.
* Undo DRILL-8424 (#daaa40325), RexBuilder changes for SAFE_CAST.