fixing github action permissions

Author: snhobbs

.github/workflows/cmake.yml

@@ -15,7 +15,7 @@ jobs:
     - uses: actions/checkout@v2
 
     - name: Install requirements
-      run: apt-get update && apt-get install -y cmake g++ make python3
+      run: sudo apt-get update && apt-get install -y cmake g++ make python3
 
     - name: Checkout Submodules
       run: |