Bump dependency versions

[cviebrock]

Description

Ran the following:

composer require -Wm \
    "silverorange/swat:^7.9.2" \
    "silverorange/site:^15.3.2" \
    "silverorange/admin:^7.0.3"

Testing Instructions (optional)

Add step-by-step instructions for testing the PR, if necessary.

1. Check out this PR.
2. Check static analysis / CI passes.

Developer Checklist

Before requesting review for this PR, make sure the following tasks are
complete:

• I added a link to the relevant Shortcut story, if applicable
• I added testing instructions, if any
• I made sure existing CI checks pass
• I checked that all requirements of the ticket are fulfilled

Reviewer Checklist

Before merging this PR, make sure the following tasks are complete:

• I made sure there are no active labels that block merge
• I followed the testing instructions
• I made sure the CI checks pass
• I reviewed the file changes on GitHub
• I checked that all requirements of the ticket (if any) are fulfilled