Bump proc-macro2 from 1.0.43 to 1.0.44 (#1697)

Bumps [proc-macro2](https://github.com/dtolnay/proc-macro2) from 1.0.43 to 1.0.44.
- [Release notes](https://github.com/dtolnay/proc-macro2/releases)
- [Commits](https://github.com/dtolnay/proc-macro2/compare/1.0.43...1.0.44)

---
updated-dependencies:
- dependency-name: proc-macro2
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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cumulus/Cargo.lock

@@ -8522,9 +8522,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro2"
-version = "1.0.43"
+version = "1.0.44"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0a2ca2c61bc9f3d74d2886294ab7b9853abd9c1ad903a3ac7815c58989bb7bab"
+checksum = "7bd7356a8122b6c4a24a82b278680c73357984ca2fc79a0f9fa6dea7dced7c58"
 dependencies = [
  "unicode-ident",
 ]

cumulus/pallets/parachain-system/proc-macro/Cargo.toml

@@ -10,7 +10,7 @@ proc-macro = true
 
 [dependencies]
 syn = "1.0.100"
-proc-macro2 = "1.0.43"
+proc-macro2 = "1.0.44"
 quote = "1.0.21"
 proc-macro-crate = "1.2.1"