fix: try instructions on rust-numpy to fix double ndarray dependency

.github/workflows/test.yml

@@ -36,6 +36,7 @@ jobs:
            source mocpy-env/bin/activate
            pip install --upgrade pip
            pip install maturin
+           cargo update --package ndarray:0.15.6 --precise 0.15.6
            maturin build --release --compatibility manylinux2014
            maturin develop --release
            pip install .[dev]
@@ -71,6 +72,7 @@ jobs:
          pip install --upgrade pip
          # Install and use maturin
          pip install maturin
+         cargo update --package ndarray:0.15.6 --precise 0.15.6
          maturin build --release --target universal2-apple-darwin
          maturin develop --release
          # Install dependencies
@@ -107,6 +109,7 @@ jobs:
           .\mocpy-env\Scripts\activate
           # Install and use maturin
           pip install maturin
+          cargo update --package ndarray:0.15.6 --precise 0.15.6
           maturin develop --release
           # Install dependencies
           pip install .[dev]

Cargo.toml

@@ -52,7 +52,4 @@ features = ["extension-module"]
 opt-level = 3
 
 [profile.dev]
-opt-level = 0
-
-
-
+opt-level = 0