Bump syn from 1.0.84 to 1.0.86 (#4870)

Bumps [syn](https://github.com/dtolnay/syn) from 1.0.84 to 1.0.86.
- [Release notes](https://github.com/dtolnay/syn/releases)
- [Commits](https://github.com/dtolnay/syn/compare/1.0.84...1.0.86)

---
updated-dependencies:
- dependency-name: syn
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

polkadot/Cargo.lock

@@ -10583,9 +10583,9 @@ checksum = "6bdef32e8150c2a081110b42772ffe7d7c9032b606bc226c8260fd97e0976601"
 
 [[package]]
 name = "syn"
-version = "1.0.84"
+version = "1.0.86"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "ecb2e6da8ee5eb9a61068762a32fa9619cc591ceb055b3687f4cd4051ec2e06b"
+checksum = "8a65b3f4ffa0092e9887669db0eae07941f023991ab58ea44da8fe8e2d511c6b"
 dependencies = [
  "proc-macro2",
  "quote",

polkadot/node/overseer/overseer-gen/proc-macro/Cargo.toml

@@ -12,7 +12,7 @@ targets = ["x86_64-unknown-linux-gnu"]
 proc-macro = true
 
 [dependencies]
-syn = { version = "1.0.83", features = ["full", "extra-traits"] }
+syn = { version = "1.0.86", features = ["full", "extra-traits"] }
 quote = "1.0.15"
 proc-macro2 = "1.0.36"
 proc-macro-crate = "1.1.0"

polkadot/xcm/procedural/Cargo.toml

@@ -10,5 +10,5 @@ proc-macro = true
 [dependencies]
 proc-macro2 = "1.0.36"
 quote = "1.0.15"
-syn = "1.0.83"
+syn = "1.0.86"
 Inflector = "0.11.4"