update conditional for ubuntu

Author: bendhouseart

.github/workflows/phantoms.yaml

@@ -136,15 +136,15 @@ jobs:
           bash python_conversions.sh
 
       - name: SetupMatlab
-        if: ${{ matrix.os == 'ubuntu-20.04' }}
+        if: ${{ matrix.os == 'ubuntu-latest' }}
         uses: matlab-actions/setup-matlab@v1
         # note matlab-actions/setup-matlab@v2 breaks this script, don't update unless you're forced to
         #with:
           #release: 'R2023a'
           #cache: true
 
       - name: Run Matlab Conversion Script on Phantoms
-        if: ${{ matrix.os == 'ubuntu-20.04' }}
+        if: ${{ matrix.os == 'ubuntu-latest' }}
         uses: matlab-actions/run-command@v1
         with:
           command: |