Don't test semi-binary on main

Author: christophfroehlich

.github/workflows/humble-semi-binary-build.yml

@@ -20,7 +20,7 @@ jobs:
       fail-fast: false
       matrix:
         ROS_DISTRO: [humble]
-        ROS_REPO: [main, testing]
+        ROS_REPO: [testing]
     with:
       ros_distro: ${{ matrix.ROS_DISTRO }}
       ros_repo: ${{ matrix.ROS_REPO }}

.github/workflows/rolling-semi-binary-build.yml

@@ -20,7 +20,7 @@ jobs:
       fail-fast: false
       matrix:
         ROS_DISTRO: [rolling, jazzy, iron]
-        ROS_REPO: [main, testing]
+        ROS_REPO: [testing]
     with:
       ros_distro: ${{ matrix.ROS_DISTRO }}
       ros_repo: ${{ matrix.ROS_REPO }}