fix update issue

Author: gcontini

.github/workflows/linux.yml

@@ -43,8 +43,8 @@ jobs:
               gpg --dearmor - | sudo tee /usr/share/keyrings/kitware-archive-keyring.gpg >/dev/null
            source /etc/os-release && echo "deb [signed-by=/usr/share/keyrings/kitware-archive-keyring.gpg] https://apt.kitware.com/ubuntu/ ${UBUNTU_CODENAME} main" | \
               sudo tee /etc/apt/sources.list.d/kitware.list >/dev/null 
-           apt-get update
-           apt-get install -y cmake
+           sudo apt-get update
+           sudo apt-get install -y cmake
     - name: Configure CMake
       # Configure CMake in a 'build' subdirectory. `CMAKE_BUILD_TYPE` is only required if you are using a single-configuration generator such as make.
       # See https://cmake.org/cmake/help/latest/variable/CMAKE_BUILD_TYPE.html?highlight=cmake_build_type