Installing packages needs sudo

Author: hannes-steffenhagen-diffblue

.github/workflows/pull-request-checks.yaml

@@ -15,7 +15,7 @@ jobs:
           # This is needed in addition to -yq to prevent apt-get from asking for
           # user input
           DEBIAN_FRONTEND: noninteractive
-        run: apt-get install -yq cmake ninja-build gcc g++ maven flex bison
+        run: sudo apt-get install -yq cmake ninja-build gcc g++ maven flex bison
       - name: Configure using CMake
         run: |
           mkdir build