Bump num-traits from 0.2.14 to 0.2.15

Bumps [num-traits](https://github.com/rust-num/num-traits) from 0.2.14 to 0.2.15.
- [Release notes](https://github.com/rust-num/num-traits/releases)
- [Changelog](https://github.com/rust-num/num-traits/blob/master/RELEASES.md)
- [Commits](rust-num/num-traits@num-traits-0.2.14...num-traits-0.2.15)

---
updated-dependencies:
- dependency-name: num-traits
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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

Author: dependabot[bot]

Cargo.lock

@@ -23,7 +23,7 @@ default = []
 [dependencies]
 anchor-lang = ">=0.22, <=0.24"
 anchor-spl = ">=0.22, <=0.24"
-num-traits = "0.2.14"
+num-traits = "0.2.15"
 quarry-mint-wrapper = { path = "../quarry-mint-wrapper", features = [
   "cpi"
 ], version = "5.0.0" }