chore(deps): unify cfg-if version by upgrading raw_sync

[hanabi1224]

Summary of changes

raw_sync seems to be unmaintained, a fork crate raw_sync_2 is available with bug fixes and dependency upgrades.

Pushed new version of raw_sync based on elast0ny/raw_sync-rs#29 fix.

Changes introduced in this pull request:

• Switch to raw_sync_2

cargo tree -p cfg-if | grep cfg-if output
Now:

cfg-if v1.0.0

Before:

error: There are multiple `cfg-if` packages in your project, and the specification `cfg-if` is ambiguous.
Please re-run this command with `-p <spec>` where `<spec>` is one of the following:
  [email protected]
  [email protected]

Reference issue to close (if applicable)

Closes

Other information and links

https://crates.io/crates/raw_sync
https://crates.io/crates/raw_sync_2

Change checklist

• I have performed a self-review of my own code,
• I have made corresponding changes to the documentation,
• I have added tests that prove my fix is effective or that my feature works (if possible),
• I have made sure the CHANGELOG is up-to-date. All user-facing changes should be reflected in this document.