locking down version of elasticsearch used in gem

[dabobert]

Making gem compatible with opens search

📚 Description of Changes

Locked version of elastic search to 7.13.2 so it is compatible with open search

❓ Motivation and Context

Due to drama between Elasticsearch and Amazon, the elasticsearch-rails gem is no longer compatible with Amazon's opensearch project. A fork of the elasticsearch-rails gem had to be created that used a version of the elasticsearch gem that was still compatible with opensearch. hence why it's now forever locked to 7.13.2

Relevant Tasks/Issues

• Helps to resolve https://scottscheapflights.atlassian.net/browse/PFM-17

🔍 Types of Changes

• 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)
• Chore (refactor, documentation update, etc)

🧪 How Has This Been Tested?

Installing opensearch, updating app.local.yml and running rails search:rebuild_all

👩‍🔬 How Can Someone QA This?

1. Install open search
2. Add the following lines to app.local.yml

development:
  # opensearch -------
  elasticsearch:
    password: admin
    scheme: http
    # host:  'a7b66.es.us-east-1.aws.found.io'
    log_level: 'info'
    port: 9200
    username: admin

1. run rails search:rebuild_all

💳 Does This Create Any New Technical Debt?

• No
• Yes

✅ Global Checklist:

• My code follows the code style of this project.
• My change requires a change to the documentation and I've updated the docs.
• I have added tests that cover my changes.
• All new and existing unit tests passed.
• All new and existing integration tests passed.
• All new and existing smoke tests passed.
• I have run this code locally to test.
• I have thoughtfully considered the security implications of this change.
• Does this change expose new, public-facing endpoints that do not have authentication?

✅ Project Checklist: