build(deps): update ndarray requirement from 0.15.0 to 0.16.1

Updates the requirements on [ndarray](https://github.com/rust-ndarray/ndarray) to permit the latest version.
- [Release notes](https://github.com/rust-ndarray/ndarray/releases)
- [Changelog](https://github.com/rust-ndarray/ndarray/blob/master/RELEASES.md)
- [Commits](rust-ndarray/ndarray@ndarray-rand-0.15.0...0.16.1)

---
updated-dependencies:
- dependency-name: ndarray
  dependency-type: direct:production
...

Signed-off-by: dependabot[bot] <[email protected]>

Cargo.toml

@@ -62,7 +62,7 @@ argmin-math = "0.4.0"       # https://docs.rs/argmin-math/latest/argmin_math/
 derive_builder = "0.20.0"   # https://docs.rs/derive_builder/latest/derive_builder/
 errorfunctions = "0.2.0"    # https://docs.rs/errorfunctions/latest/errorfunctions/
 nalgebra = "0.33.0"         # https://docs.rs/nalgebra/latest/nalgebra/
-ndarray = "0.15.0"          # https://docs.rs/ndarray/latest/ndarray/
+ndarray = "0.16.1"          # https://docs.rs/ndarray/latest/ndarray/
 ndrustfft = "0.4.0"         # https://docs.rs/ndrustfft/latest/ndrustfft/
 ndarray-rand = "0.14.0"     # https://docs.rs/ndarray-rand/latest/ndarray_rand/
 plotly = "0.9.0"            # https://docs.rs/plotly/latest/plotly/