chore(deps): bump proc-macro2 from 1.0.80 to 1.0.81 (#49)

Bumps [proc-macro2](https://github.com/dtolnay/proc-macro2) from 1.0.80 to 1.0.81.
- [Release notes](https://github.com/dtolnay/proc-macro2/releases)
- [Commits](dtolnay/proc-macro2@1.0.80...1.0.81)

---
updated-dependencies:
- dependency-name: proc-macro2
  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>

Cargo.toml

@@ -24,7 +24,7 @@ version = "1.0.36"
 features = ["proc-macro"]
 
 [dependencies.proc-macro2]
-version = "1.0.80"
+version = "1.0.81"
 
 [features]
 default = ["original-compatibility", "strict-syntax", "and-time", "time-backend"]