always install glib for linux jobs of github action workflow

this fixes the following error when configuring linux dynamic dependencies jobs
CMake Error at /usr/local/share/cmake-3.31/Modules/FindPkgConfig.cmake:938 (message):
  None of the required 'glib-2.0' found
Call Stack (most recent call first):
  thirdparty/fluidsynth/src/CMakeLists.txt:158 (pkg_search_module)

.github/workflows/continuous_integration.yml

@@ -31,6 +31,7 @@ jobs:
         - name: Linux GCC - Dynamic Deps
           os: ubuntu-latest
           build_type: Release
+          deps_cmd: sudo apt update && sudo apt install libglib2.0-dev
 
         - name: Linux GCC - Static Deps
           os: ubuntu-latest
@@ -42,6 +43,7 @@ jobs:
           os: ubuntu-latest
           build_type: Release
           cmake_options: -DCMAKE_C_COMPILER=/usr/bin/clang -DCMAKE_CXX_COMPILER=/usr/bin/clang++
+          deps_cmd: sudo apt update && sudo apt install libglib2.0-dev
 
         - name: Linux Clang - Static Deps
           os: ubuntu-latest