Update num-derive requirement from 0.2 to 0.3

Updates the requirements on [num-derive](https://github.com/rust-num/num-derive) to permit the latest version.
- [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-0.2.0...num-derive-0.3.0)

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

1 files changed, 1 insertions, 1 deletions

diff --git a/Cargo.toml b/Cargo.toml
index 938bdaa..ec9de77 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -21,7 +21,7 @@ serde_json = "1.0.39"
 csv = "1.0.7"
 snafu = {version="0.5.0", features = ["backtraces", "rust_1_30"]}
 num-traits = "0.2"
-num-derive = "0.2"
+num-derive = "0.3"
 winstructs = "0.2.0"
 lru = "0.1.15"
 itertools = "0.8.0"