Upgrade bitflags to v2.4.2 (#8693)

This PR upgrades our [`bitflags`](https://crates.io/crates/bitflags)
dependency to v2.4.2.

This also fixes an error that was seen when running `clippy`:

```
error: &-masking with zero
  --> crates/fsevent/src/fsevent.rs:19:1
   |
19 | / bitflags! {
20 | |   #[repr(C)]
21 | |   pub struct StreamFlags: u32 {
22 | |     const NONE = 0x00000000;
...  |
46 | |   }
47 | | }
   | |_^
   |
   = help: for further information visit https://rust-lang.github.io/rust-clippy/master/index.html#bad_bit_mask
   = note: `#[deny(clippy::bad_bit_mask)]` on by default
   = note: this error originates in the macro `__impl_bitflags` which comes from the expansion of the macro `bitflags` (in Nightly builds, run with -Z macro-backtrace for more info)
```

Fixes #8681.

Release Notes:

- N/A

crates/search/src/search.rs

@@ -41,7 +41,7 @@ actions!(
 );
 
 bitflags! {
-    #[derive(Default)]
+    #[derive(Debug, PartialEq, Eq, Clone, Copy, Default)]
     pub struct SearchOptions: u8 {
         const NONE = 0b000;
         const WHOLE_WORD = 0b001;