build(deps): bump syn from 1.0.45 to 1.0.46

Bumps [syn](https://github.com/dtolnay/syn) from 1.0.45 to 1.0.46.
- [Release notes](https://github.com/dtolnay/syn/releases)
- [Commits](https://github.com/dtolnay/syn/compare/1.0.45...1.0.46)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

Cargo.lock

@@ -1644,9 +1644,9 @@ checksum = "343f3f510c2915908f155e94f17220b19ccfacf2a64a2a5d8004f2c3e311e7fd"
 
 [[package]]
 name = "syn"
-version = "1.0.45"
+version = "1.0.46"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ea9c5432ff16d6152371f808fb5a871cd67368171b09bb21b43df8e4a47a3556"
+checksum = "5ad5de3220ea04da322618ded2c42233d02baca219d6f160a3e9c87cda16c942"
 dependencies = [
  "proc-macro2",
  "quote",