Update name of blocks_in_if_conditions clippy lint

    warning: lint `clippy::blocks_in_if_conditions` has been renamed to `clippy::blocks_in_conditions`
      --> src/lib.rs:42:5
       |
    42 |     clippy::blocks_in_if_conditions,
       |     ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^ help: use the new name: `clippy::blocks_in_conditions`
       |
       = note: `#[warn(renamed_and_removed_lints)]` on by default

src/lib.rs

@@ -39,7 +39,7 @@
 
 #![doc(html_root_url = "https://docs.rs/dissimilar/1.0.7")]
 #![allow(
-    clippy::blocks_in_if_conditions,
+    clippy::blocks_in_conditions,
     clippy::bool_to_int_with_if,
     clippy::cast_possible_wrap,
     clippy::cast_sign_loss,