Issue 3223: First phase of migration to Rust Edition 2024

Update cargo dependencies
Apply cargo fix --edition
Change cargo.toml edition property to `2024`

^ Conflicts:
^	Cargo.lock
^	src/ffi.rs

^ Conflicts:
^	src/offset_table.rs
^	src/raw_block.rs

src/arena.rs

@@ -281,14 +281,14 @@ pub trait ArenaAllocated {
     unsafe fn typed_ptr(ptr: UntypedArenaPtr) -> TypedArenaPtr<Self>
     where
         Self::Payload: Sized,
-    {
+    { unsafe {
         TypedArenaPtr(NonNull::new_unchecked(
             ptr.get_ptr()
                 .byte_add(Self::header_offset_from_payload())
                 .cast_mut()
                 .cast::<Self::Payload>(),
         ))
-    }
+    }}
 
     #[allow(clippy::missing_safety_doc)]
     fn alloc(arena: &mut Arena, value: Self::Payload) -> TypedArenaPtr<Self>
@@ -496,7 +496,7 @@ impl Arena {
     }
 }
 
-unsafe fn drop_slab_in_place(value: NonNull<AllocSlab>, tag: ArenaHeaderTag) {
+unsafe fn drop_slab_in_place(value: NonNull<AllocSlab>, tag: ArenaHeaderTag) { unsafe {
     macro_rules! drop_typed_slab_in_place {
         ($payload: ty, $value: expr) => {
             <$payload as ArenaAllocated>::dealloc($value.cast::<TypedAllocSlab<$payload>>())
@@ -580,7 +580,7 @@ unsafe fn drop_slab_in_place(value: NonNull<AllocSlab>, tag: ArenaHeaderTag) {
             unreachable!("NullStream is never arena allocated!");
         }
     }
-}
+}}
 
 impl Drop for Arena {
     fn drop(&mut self) {