Bump num-derive from 0.3.0 to 0.3.1 in /token (#213)

Bumps [num-derive](https://github.com/rust-num/num-derive) from 0.3.0 to 0.3.1.
- [Release notes](https://github.com/rust-num/num-derive/releases)
- [Changelog](https://github.com/rust-num/num-derive/blob/master/RELEASES.md)
- [Commits](https://github.com/rust-num/num-derive/compare/num-derive-0.3.0...num-derive-0.3.1)

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

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

token/Cargo.lock

@@ -904,9 +904,9 @@ dependencies = [
 
 [[package]]
 name = "num-derive"
-version = "0.3.0"
+version = "0.3.1"
 source = "registry+https://github.com/rust-lang/crates.io-index"
-checksum = "0c8b15b261814f992e33760b1fca9fe8b693d8a65299f20c9901688636cfb746"
+checksum = "e0396233fb2d5b0ae3f05ff6aba9a09185f7f6e70f87fb01147d545f85364665"
 dependencies = [
  "proc-macro2 1.0.18",
  "quote 1.0.7",