Update License Management major version

What does this MR do?

Update the Secure-Binaries template to use the major version 3 instead of the previous x-y-stable format. The version has changed with this MR: !29603 (merged)

Does this MR meet the acceptance criteria?

Conformity

• [-] Changelog entry
• [-] Documentation (if required)
• [-] Code review guidelines
• [-] Merge request performance guidelines
• [-] Style guides
• [-] Database guides
• [-] Separation of EE specific content

Availability and Testing

• [-] Review and add/update tests for this feature/bug. Consider all test levels. See the Test Planning Process.
• [-] Tested in all supported browsers
• [-] Informed Infrastructure department of a default or new setting change, if applicable per definition of done

Relevant Test Merge Requests:

• https://gitlab.com/gitlab-org/security-products/bundle/-/merge_requests/2 update this test bundle to download the new "license_compliance:3" image (specific job)
• https://gitlab.com/gitlab-org/security-products/tests/ruby-bundler/-/jobs/524830450 is a job to test !28617 (merged), demonstrating that we're using the right image.

Security

If this MR contains changes to processing or storing of credentials or tokens, authorization and authentication methods and other items described in the security review guidelines:

• [-] Label as security and @ mention @gitlab-com/gl-security/appsec
• [-] The MR includes necessary changes to maintain consistency between UI, API, email, or other methods
• [-] Security reports checked/validated by a reviewer from the AppSec team

@xlgmokha could you please take a look?