Add upper-bound to social-auth-core (#711)

Authentication breaks when we go to 4.5.5, so this fixes that

AAP-43108

# [AAP-43108] Brief Title Describing the Change

## Description
<!-- Mandatory: Provide a clear, concise description of the changes and
their purpose -->
- What is being changed? Pin social core to 4.5.4 and below.
- Why is this change needed? Authentication breaks with our FakeBackend
class on any version above social_core 4.5.5
- How does this change address the issue? Pins social core to 4.5.4 and
below, so we do not end up using 4.5.5

## Type of Change
- [X] Bug fix (non-breaking change which fixes an issue)
- [ ] New feature (non-breaking change which adds functionality)
- [ ] Breaking change (fix or feature that would cause existing
functionality to not work as expected)
- [ ] Documentation update
- [ ] Test update
- [ ] Refactoring (no functional changes)
- [ ] Development environment change
- [ ] Configuration change

## Self-Review Checklist
- [X] I have performed a self-review of my code
- [X] I have added relevant comments to complex code sections
- [ ] I have updated documentation where needed
- [X] I have considered the security impact of these changes
- [X] I have considered performance implications
- [X] I have thought about error handling and edge cases
- [X] I have tested the changes in my local environment

## Testing Instructions
Start up an test_app, ensure dependencies are reinstalled and do not
cause a conflict

### Expected Results
No dependency conflicts

## Additional Context
<!-- Optional but helpful information -->

### Required Actions
<!-- Check if changes require work in other areas ->
<!-- Remove section if no external actions needed -->
- [ ] Requires documentation updates
  <!-- API docs, feature docs, deployment guides -->
- [ ] Requires downstream repository changes
  <!-- Specify repos: django-ansible-base, eda-server, etc. -->
- [ ] Requires infrastructure/deployment changes
  <!-- CI/CD, installer updates, new services -->
- [ ] Requires coordination with other teams
  <!-- UI team, platform services, infrastructure -->
- [ ] Blocked by PR/MR: #XXX
  <!-- Reference blocking PRs/MRs with brief context -->

### Screenshots/Logs
<!-- Add if relevant to demonstrate the changes -->

Author: BrennanPaciorek

requirements/requirements_authentication.in

@@ -1,4 +1,5 @@
 social-auth-app-django==5.4.1
+social-auth-core<=4.5.4
 tabulate
 
 # These should eventually be split out when the authentications move into their own repo