Filter FERC714 ETL by year

[e-belfer]

This issue partially addresses issue #2628 and blocking issues found in #2550. FERC 714 data is not time-subsetted, with the extractor reading in CSV files that are organized on a per-table basis. This code changes the extraction step to add the ability to filter by year on the record_yr column, which is present in all tables except for the respondent_id_ferc714 table. It also updates the fast ETL to include 2 years of data for the FERC 714 run: 2019 and 2020.

While this should not make large performance improvements in the current ETL, this should hopefully help with some of the memory constraints encountered in #2550.

PR Checklist

• Merge the most recent version of the branch you are merging into (probably dev).
• All CI checks are passing. Run tests locally to debug failures
• Make sure you've included good docstrings.
• For major data coverage & analysis changes, run data validation tests
• Include unit tests for new functions and classes.
• Defensive data quality/sanity checks in analyses & data processing functions.
• Update the release notes and reference reference the PR and related issues.
• Do your own explanatory review of the PR to help the reviewer understand what's going on and identify issues preemptively.

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Codecov Report

Patch coverage: 100.0% and project coverage change: -0.1 ⚠️

Comparison is base (5183494) 87.1% compared to head (59cf4c3) 87.1%.

❗ Current head 59cf4c3 differs from pull request most recent head d6f2963. Consider uploading reports for the commit d6f2963 to get more accurate results

Additional details and impacted files

@@           Coverage Diff           @@
##             dev   #2649     +/-   ##
=======================================
- Coverage   87.1%   87.1%   -0.1%     
=======================================
  Files         86      86             
  Lines      10001   10004      +3     
=======================================
+ Hits        8716    8717      +1     
- Misses      1285    1287      +2     

Impacted Files	Coverage Δ
src/pudl/extract/ferc714.py	100.0% <100.0%> (ø)

... and 1 file with indirect coverage changes

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[zschira]

Looks good!

[zschira]

Very satisfying line to me