Draft: Adding CI/CD troubleshooting for modifying components vs creating a new release

What does this MR do?

• This MR adds a troubleshooting subsection to advise CI/CD component authors that local modifications to the component need to be part of a release before those modifications will be reflected in pipelines that reference the component
• We're still in the incipient stage of CI/CD components being a feature, so customers (and team members!) are still learning about it
• It may be worth emphasising higher on the page that changes won't be reflected unless they are part of a release (we could probably mention it in the first pre-section, or in the testing section

Context:

• A customer encountered an error, but applied a fix to the error inside their component .yml file
• The customer expressed confusion that their local modifications to a component's .yml file was still resulting in the same error
• It became clear that the pipeline referencing the component (and raising the error) was still referencing the original, erroneous version of the component

Related issues

Author's checklist

• Optional. Consider taking the GitLab Technical Writing Fundamentals course.
• Follow the:
  • Documentation process.
  • Documentation guidelines.
  • Style Guide.
• If you're adding a new page, add the product availability details under the H1 topic title.
• If you are a GitLab team member, request a review based on:
  • The documentation page's metadata.
  • The associated Technical Writer.

If you are a GitLab team member and only adding documentation, do not add any of the following labels:

• ~"frontend"
• ~"backend"
• ~"type::bug"
• ~"database"

These labels cause the MR to be added to code verification QA issues.

Reviewer's checklist

Documentation-related MRs should be reviewed by a Technical Writer for a non-blocking review, based on Documentation Guidelines and the Style Guide.

If you aren't sure which tech writer to ask, use roulette or ask in the #docs Slack channel.

• If the content requires it, ensure the information is reviewed by a subject matter expert.
• Technical writer review items:
  • Ensure docs metadata is present and up-to-date.
  • Ensure the appropriate labels are added to this MR.
  • Ensure a release milestone is set.
  • If relevant to this MR, ensure content topic type principles are in use, including:
    • The headings should be something you'd do a Google search for. Instead of Default behavior, say something like Default behavior when you close an issue.
    • The headings (other than the page title) should be active. Instead of Configuring GDK, say something like Configure GDK.
    • Any task steps should be written as a numbered list.
    • If the content still needs to be edited for topic types, you can create a follow-up issue with the docs-technical-debt label.
• Review by assigned maintainer, who can always request/require the reviews above. Maintainer's review can occur before or after a technical writer review.