Update windows_ROS2.yaml

Author: ooeygui

.github/workflows/windows_ROS2.yaml

@@ -10,7 +10,7 @@ on:
 
 jobs:
   build:
-    runs-on: [windows-latest]
+    runs-on: [windows-2019]
     strategy:
       fail-fast: false
       matrix:
@@ -40,4 +40,4 @@ jobs:
         call "C:\opt\ros\%ROSDISTRO%\x64\setup.bat"
         colcon build --packages-select azure_kinect_ros_driver --event-handlers console_cohesion+
       env:
-        ROSDISTRO: ${{ matrix.ROSDISTRO }}
+        ROSDISTRO: ${{ matrix.ROSDISTRO }}