Remove ""s

Author: christophfroehlich

.github/workflows/build_and_publish_debian_docker.yaml

@@ -49,4 +49,4 @@ jobs:
           tags: ghcr.io/${{ github.repository_owner }}/ros:${{ matrix.ros_distro }}-debian
           build-args: |
             ROS_DISTRO=${{ matrix.ros_distro }}
-            SOURCE_PACKAGES="${{ matrix.source_packages }}"
+            SOURCE_PACKAGES=${{ matrix.source_packages }}

.github/workflows/build_and_publish_rhel_docker.yaml

@@ -20,14 +20,14 @@ jobs:
       fail-fast: false
       matrix:
         include:
-          - ros_distro: 'humble'
-            rhel_version: 'rhel8'
-          - ros_distro: 'jazzy'
-            rhel_version: 'rhel9'
-          - ros_distro: 'kilted'
-            rhel_version: 'rhel9'
-          - ros_distro: 'rolling'
-            rhel_version: 'rhel9'
+          - ros_distro: humble
+            rhel_version: rhel8
+          - ros_distro: jazzy
+            rhel_version: rhel9
+          - ros_distro: kilted
+            rhel_version: rhel9
+          - ros_distro: rolling
+            rhel_version: rhel9
     steps:
       - uses: actions/checkout@v5
       - uses: docker/setup-buildx-action@v3