Drop Ubuntu Bionic 18.04 as it has been deprecated by GitHub.

.github/workflows/cpp-python-build.yml

@@ -54,11 +54,6 @@ jobs:
  shared_libs: OFF
  build_julia: ON
  display_stack_trace: OFF
- - os: ubuntu-18.04
- expat: OFF
- shared_libs: OFF
- build_julia: ON
- display_stack_trace: OFF
  env:
  static_link: ${{ matrix.expat == 'OFF' && matrix.shared_libs == 'OFF' }}
  runs-on: ${{ matrix.os }}
@@ -804,7 +799,7 @@ jobs:
  ## Release files
  - Windows 64 bits
  - `JSBSim-${{ env.VERSION }}-setup.exe` (Windows installer compiled with Microsoft ${{ env.MSVC_VERSION }})
- - Ubuntu Bionic 18.04 and Focal 20.04 - amd64
+ - Ubuntu Focal 20.04 and Jammy 22.04 - amd64
  - `*.deb` (Debian packages)
  - Python wheel packages can be installed from [PyPI](https://pypi.org/project/JSBSim/) with the command `pip install jsbsim` or `pip install --upgrade jsbsim` when JSBSim is already installed on your system.
  - Conda packages are available from [conda-forge](https://anaconda.org/conda-forge/jsbsim). To install this package with conda run: `conda install -c conda-forge jsbsim`