Add ability to pass storage_options to pandas.to_parquet. Update docs/CHANGELOG

[iameskild]

Questions:

• Do we want to include docstrings for _retry_args (pack_partitions_to_parquet)?
  • Answer: Swap out retrying with tenacity in another PR.
• Do we want to pass storage_options to pandas.to_parquet call?
  • Available as a parameter in pandas > 1.2
  • See write_partition (pack_partitions_to_parquet)
  • Answer: Added the ability to pass storage_options to pandas.to_parquet (only for version >= 1.2)