build(deps): bump proc-macro2 from 1.0.76 to 1.0.81 (#5366)

Bumps [proc-macro2](https://github.com/dtolnay/proc-macro2) from 1.0.76 to 1.0.81.
- [Release notes](https://github.com/dtolnay/proc-macro2/releases)
- [Commits](dtolnay/proc-macro2@1.0.76...1.0.81)

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

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

Author: dependabot[bot]

Cargo.lock

@@ -14,7 +14,7 @@ proc-macro = true
 [dependencies]
 syn = { workspace = true }
 quote = "1.0"
-proc-macro2 = "1.0.73"
+proc-macro2 = "1.0.81"
 heck = "0.5"
 
 [dev-dependencies]

graph/derive/Cargo.toml

@@ -9,5 +9,5 @@ proc-macro = true
 [dependencies]
 syn = { workspace = true }
 quote = "1.0"
-proc-macro2 = "1.0.73"
+proc-macro2 = "1.0.81"
 heck = "0.5"