apt-get update before installing dependencies in GitHub workflow

Author: joesiltberg

.github/workflows/cmake-multi-platform.yml

@@ -43,7 +43,7 @@ jobs:
 
     - name: Install dependencies on Ubuntu
       if: matrix.os == 'ubuntu-latest'
-      run: sudo apt-get install -y libldap2-dev
+      run: sudo apt-get update && apt-get install -y libldap2-dev
 
     - name: Configure CMake
       run: cmake -DCMAKE_CXX_COMPILER=${{ matrix.cpp_compiler }} -DCMAKE_C_COMPILER=${{ matrix.c_compiler }} --preset=${{ matrix.cmake_preset }}