Update site ops docs

[bhazelton]

Description

Update the site docs to list the cask machines as ones that should have their services restarted when hera_mc changes.

Also fixed some astropy future warnings that are new as of astropy 6.1.

Motivation and Context

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• Schema change (any change to the SQL tables)
• New feature without schema change (non-breaking change which adds functionality)
• Change associated with a change in redis structure
• Breaking change (fix or feature that would cause existing functionality to change)
• Version change
• Build or continuous integration change
• Other

Checklist:

Other:

• My code follows the code style of this project.
• I understand the updates required onsite (detailed in the readme) and I will make those
  changes when this is merged.
• Unit tests pass on site (This is a critical check, CI can differ from site).
• I have updated the CHANGELOG.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 98.36%. Comparing base (4eb014b) to head (628d681).

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #667      +/-   ##
==========================================
- Coverage   98.36%   98.36%   -0.01%     
==========================================
  Files          35       35              
  Lines        5332     5331       -1     
==========================================
- Hits         5245     5244       -1     
  Misses         87       87              

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[bhazelton]

@plaplant a ping on this.

[plaplant]

Thanks for the poke @bhazelton! This looks good to me.