Ignore too_many_lines pedantic clippy lint

    error: this function has too many lines (323/100)
       --> src/value/ser.rs:391:5
        |
    391 | /     fn serialize_entry<K, V>(&mut self, key: &K, value: &V) -> Result<()>
    392 | |     where
    393 | |         K: ?Sized + ser::Serialize,
    394 | |         V: ?Sized + ser::Serialize,
    ...   |
    775 | |         Ok(())
    776 | |     }
        | |_____^
        |
        = note: `-D clippy::too-many-lines` implied by `-D clippy::pedantic`
        = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#too_many_lines

src/lib.rs

@@ -152,6 +152,7 @@
     clippy::missing_panics_doc,
     clippy::never_loop,
     clippy::return_self_not_must_use,
+    clippy::too_many_lines,
     clippy::unsafe_removed_from_name,
     clippy::wildcard_in_or_patterns,
     // noisy