Ignore match_single_binding clippy lint in test

    warning: this match could be written as a `let` statement
      --> tests/test_macros.rs:63:9
       |
    63 | /         match s {
    64 | |             Struct { condition } => ensure!(condition), // &bool
    65 | |         }
       | |_________^
       |
       = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#match_single_binding
       = note: `#[warn(clippy::match_single_binding)]` on by default
    help: consider using a `let` statement
       |
    63 ~         let Struct { condition } = s;
    64 +         ensure!(condition);
       |

tests/test_macros.rs

@@ -3,6 +3,7 @@
     clippy::eq_op,
     clippy::incompatible_msrv, // https://github.com/rust-lang/rust-clippy/issues/12257
     clippy::items_after_statements,
+    clippy::match_single_binding,
     clippy::needless_pass_by_value,
     clippy::shadow_unrelated,
     clippy::wildcard_imports