message: Update OS/virtual environments available
diff: @@ -55,10 +55,9 @@ Setup PHP with required extensions, php.ini configuration and composer in [GitHu
  |Virtual environment|matrix.operating-system|
  |--- |--- |
  |Windows Server 2019|`windows-latest` or `windows-2019`|
  -|Windows Server 2016 R2|`windows-2016`|
  |Ubuntu 18.04|`ubuntu-latest` or `ubuntu-18.04`|
  |Ubuntu 16.04|`ubuntu-16.04`|
  -|macOS X Mojave 10.14|`macOS-latest` or `macOS-10.14`|
  +|macOS X Catalina 10.15|`macOS-latest` or `macOS-10.15`|
  ## :wrench: PHP Extension Support
  - On `ubuntu` extensions which have the package in apt are installed.
  