Upgrade Mongo to Version 8

[raclim]

Fixes #3483 and Progress Towards #3482

Incoming Changes

Packages:

• Node to v.18.20.8 and npm to v10.8.2
• mongoose to v8.16.3 and connect-mongo to v5.1.0
• Upgrading sass-loader, style-loader, css-loader, eslint, eslint-config-airbnb, and eslint-plugin-react major/minor/patch versions to be compatible with new Node.js version

Other:

• Update Installation documentation, workflows, and deployment files with new versions.
• Update MongoStore setup in server.js with v8 syntax
• Add new eslint rules to be compatible with new versions (most rules are temporarily turned off and will be reintegrated in subsequent PRs). Remnant files are changes to adhere to linting rules.

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I have verified that this pull request:

• has no linting errors (npm run lint)
• has no test errors (npm run test)
• is from a uniquely-named feature branch and is up to date with the develop branch.
• is descriptively named and links to an issue number, i.e. Fixes #123

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