fix: Use elements match in gapsBetweenTSDBsAndMetas test (#13722)

Author: salvacorts

pkg/bloombuild/planner/planner_test.go

@@ -163,7 +163,7 @@ func Test_gapsBetweenTSDBsAndMetas(t *testing.T) {
 				require.Error(t, err)
 				return
 			}
-			require.Equal(t, tc.exp, gaps)
+			require.ElementsMatch(t, tc.exp, gaps)
 		})
 	}
 }