Bump proc-macro-warning from 0.3.1 to 0.4.1 (#14171)

Bumps [proc-macro-warning](https://github.com/ggwpez/proc-macro-warning) from 0.3.1 to 0.4.1.
- [Commits](https://github.com/ggwpez/proc-macro-warning/compare/v0.3.1...v0.4.1)

---
updated-dependencies:
- dependency-name: proc-macro-warning
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

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

substrate/Cargo.lock

@@ -7976,9 +7976,9 @@ dependencies = [
 
 [[package]]
 name = "proc-macro-warning"
-version = "0.3.1"
+version = "0.4.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0e99670bafb56b9a106419397343bdbc8b8742c3cc449fec6345f86173f47cd4"
+checksum = "70550716265d1ec349c41f70dd4f964b4fd88394efe4405f0c1da679c4799a07"
 dependencies = [
  "proc-macro2",
  "quote",