Remove hard-coded year from EIA AEO archiver

[e-belfer]

As noted in #372 and #377, hardcoding the range of years archived by our data means that our archivers will never automatically catch a new year's release of data. There will be no 2024 AEO release, but to be able to catch the release of AEO in 2025 we should remove the hardcoded years in the archiver.

Ideally, we would do this by:

• identifying a directory or page where all years of data are listed
• querying this list to establish the date range
• iterating through this data range to feed a year parameter to the open data URL currently used in the archiver

If no such directory is found, we could attempt to download all years of data since the first year using a try/except clause. This would be less robust and less ideal, however.