dropped windows test and added dcm2niix and mrtrix to gha

.github/workflows/ci-cd.yml

@@ -16,7 +16,7 @@ jobs:
   test:
     strategy:
       matrix:
-        os: [macos-latest, ubuntu-latest, windows-latest]
+        os: [macos-latest, ubuntu-latest]
         python-version: ["3.8", "3.12"]
       fail-fast: false
     runs-on: ${{ matrix.os }}
@@ -32,6 +32,20 @@ jobs:
       run: git config --local --unset http.https://github.com/.extraheader
     - name: Fetch tags
       run: git fetch --prune --unshallow
+    - name: Install Dcm2niix
+      run: |
+        curl -fLO https://github.com/rordenlab/dcm2niix/releases/latest/download/dcm2niix_lnx.zip
+        unzip dcm2niix_lnx.zip
+        mv dcm2niix /usr/local/bin
+    - name: Install Minconda
+      uses: conda-incubator/setup-miniconda@v2
+      with:
+        auto-activate-base: true
+        activate-environment: ""
+    - name: Install MRtrix via Conda
+      run: |
+        conda install -c mrtrix3 mrtrix3
+        mrconvert --version      
     - name: Disable etelemetry
       run:  echo "NO_ET=TRUE" >> $GITHUB_ENV
     - name: Set up Python ${{ matrix.python-version }} on ${{ matrix.os }}