Adding Q3 river conditions and blog update

[cnell-usgs]

Changes made:

• Added a line on viz-list.csv that corresponds to the most recent river conditions animation. Importantly, this includes a thumbnail address river_conditions_jan_mar_2022.png that corresponds to a thumbnail file in s3, within the thumbails subdirectory, and a link url that goes directly to the drupal animation. Current conditions also get assigned the group event, which tells vue to populate it under the correct accordion on the website.
• I pushed the thumbnail to s3, a process which still needs to be documented https://github.com/USGS-VIZLAB/vizlab-home/issues/22
• Also modified the blog reel to de-emphasize hiring now that it is over. Replaced featured thumbnail with one corresponding to the "What is VizLab?" blog post.

Landing looks like this:

Testing:

Before making this pull request, I:

• [x] Cleaned the code the way Vue likes it - run 'npm run lint --fix'
• [x] Made sure all tests run
• [ ] Ran WAVE plugin 508 compliance tool

I can confirm this has been checked on:

• [x] Chrome
• [x] Safari
• [ ] Edge
• [ ] Firefox
• [ ] Samsung Internet
• [ ] Internet Explorer 11 (not supported, but still needs at least a working user redirect page)

[cnell-usgs]

Adding @hcorson-dosch as a reviewer for awareness of how this was done, does not require review.