Speed up specs for GET /projects/:id/events

What does this MR do?

Just groups some expectations into a single it block. Reduce this particular tests block time by half.

Are there points in the code the reviewer needs to double check?

No.

Does this MR meet the acceptance criteria?

• Tests
  • All builds are passing
• Conform by the style guides
• Branch has no merge conflicts with master (if it does - rebase it please)
• Squashed related commits together