Move checkout code to calling workflow

Author: aabrown100-git

.github/actions/test-macos/action.yml

@@ -4,9 +4,6 @@ description: 'Run tests on macOS with all dependencies'
 runs:
   using: 'composite'
   steps:
-    - name: Checkout code
-      uses: actions/checkout@v4
-      
     - name: Install macOS dependencies
       shell: bash
       run: |

.github/actions/test-ubuntu/action.yml

@@ -4,9 +4,6 @@ description: 'Run tests on Ubuntu with coverage reporting'
 runs:
   using: 'composite'
   steps:
-    - name: Checkout code
-      uses: actions/checkout@v4
-      
     - name: Build svZeroDSolver
       shell: bash
       run: |

.github/workflows/tests.yml

@@ -43,6 +43,8 @@ jobs:
     needs: check-for-changes
     if: ${{ needs.check-for-changes.outputs.run_full_tests == 'true' }}
     steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
       - name: Run Ubuntu tests
         uses: ./.github/actions/test-ubuntu
 
@@ -53,6 +55,8 @@ jobs:
     needs: check-for-changes
     if: ${{ needs.check-for-changes.outputs.run_full_tests == 'true' }}
     steps:
+      - name: Checkout code
+        uses: actions/checkout@v4
       - name: Run macOS tests
         uses: ./.github/actions/test-macos