Add 14.x.x Secure schemas versions

What does this MR do?

Adds versions 14.0.0, 14.0.1, 14.0.2 and 14.0.3 versions of the Secure schemas into GitLab Rails.

There is work underway that will schema validate JSON reports produced by Secure analyzers prior to them being parsed and saved in GitLab Rails. For this work to take place, the schemas themselves must be part of the code repository. Future versions of schemas will be added to Rails as they are created.

Related to issue #335788 (closed).

Does this MR meet the acceptance criteria?

Conformity

• I have included changelog trailers, or none are needed. (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.