Adds MPL 2.0 to the list of acceptable licenses

What does this MR do?

Adds the Mozilla Public License 2.0 to the list of acceptable licenses: https://www.mozilla.org/en-US/MPL/2.0/

Does this MR meet the acceptance criteria?

• Documentation created/updated
• Tests added for this feature/bug
• Conforms to the code review guidelines
• Conforms to the merge request performance guidelines
• Conforms to the style guides
• Conforms to the database guides
• Link to e2e tests MR added if this MR has Requires e2e tests label. See the Test Planning Process.