Exchange rocket FA icons with Gitlab SVGs

What does this MR do?

Closes #221219 (closed)

Updates the instances of FontAwesome Rocket icons to the GitLab SVG rocket as part of our overall epic.

To review each location:

1. On the Tags list for a project (example: http://localhost:3000/h5bp/html5-boilerplate/-/tags) either add a new tag or edit an existing one to include a tag description. The rocket icon will show for any tag that has a populated description field on the list.

2. From the releases list (example: http://127.0.0.1:3000/h5bp/html5-boilerplate/-/releases) - edit the corresponding release from your tag in step 1 and ensure a milestone is associated with it using the milestone dropdown. Then, visit the milestones list (example: http://localhost:3000/h5bp/html5-boilerplate/-/milestones). The rocket icon appears next to the release name on the Milestone list item.

3. From the milestones list, click into the milestone with an associated release. On the milestone page, collapse the right sidebar. The rocket icon indicates the release in the collapsed sidebar.

Screenshots

Before	After

Does this MR meet the acceptance criteria?

Conformity

N/A

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

Security

N/A