cmd/mr_list_test: change MR number to match current

Unfortunately our testing infra relies on a real environment that get
updated from time to time. This commit updates the MR number to match
the test code with the actual MR live in the testing repo.

Signed-off-by: Bruno Meneguele <[email protected]>

cmd/mr_list_test.go

@@ -154,7 +154,7 @@ func Test_mrFilterByTargetBranch(t *testing.T) {
 }
 
 var (
-	latestCreatedTestMR = "!1447 Test for mr approval rules"
+	latestCreatedTestMR = "!1476 create mr request"
 	latestUpdatedTestMR = "!329 MR for assign and review commands"
 )