Add upgrade banner to Security Configuration page

What does this MR do?

Add upgrade banner to Security Configuration page

Addresses #332691 (closed).

Testing locally

1. Enable the security_configuration_redesign feature flag
2. Navigate to Security & Compliance > Configuration in a project that is on any plan other than Ultimate.

Screenshots (strongly suggested)

Does this MR meet the acceptance criteria?

Conformity

• [-] I have included a changelog entry, or it's not needed. No changelog needed, as this is behind a feature flag (Does this MR need a changelog?)
• [-] I have added/updated documentation, or it's not needed. (Is documentation required?)
• I have properly separated EE content from FOSS, or this MR is FOSS only. (Where should EE code go?)
• [-] I have added information for database reviewers in the MR description, or it's not needed. (Does this MR have database related changes?)
• [-] I have self-reviewed this MR per code review guidelines.
• This MR does not harm performance, or I have asked a reviewer to help assess the performance impact. (Merge request performance guidelines)
• I have followed the style guides.
• This change is backwards compatible across updates, or this does not apply.

Availability and Testing

• I have added/updated tests following the Testing Guide, or it's not needed. (Consider all test levels. See the Test Planning Process.)
• [-] I have tested this MR in all supported browsers, or it's not needed.
• [-] I have informed the Infrastructure department of a default or new setting change per definition of done, or it's not needed.