Meltano

<https://github.com/meltano/sdk/pull/3536|#3536 refactor: Documented removals slated for v0.56 and updated warning messages>
Pull request opened by <https://github.com/edgarrmondragon|edgarrmondragon>
SSIA

*Summary by Sourcery*

Document deprecations and planned removals for batch file encodings in v0.56 and update deprecation warnings accordingly.
Enhancements:
• Update JSONLinesEncoding and ParquetEncoding decorators to use the Singer SDK deprecation helper with clearer messages including the v0.56 removal timeline.
Documentation:
• Add v0.56 deprecation notes documenting planned removal of JSONLinesEncoding and ParquetEncoding in favor of BaseBatchFileEncoding.
<https://github.com/meltano/sdk|meltano/sdk>

<https://github.com/meltano/sdk/pull/3536|#3536 refactor: Documented removals slated for v0.56 and updated warning messages>
Pull request ready for review by <https://github.com/edgarrmondragon|edgarrmondragon>
<https://github.com/meltano/sdk|meltano/sdk>

<https://github.com/meltano/sdk/pull/3536|#3536 refactor: Documented removals slated for v0.56 and updated warning messages>
Pull request merged by <https://github.com/edgarrmondragon|edgarrmondragon>
<https://github.com/meltano/sdk|meltano/sdk>