fix: add bundler variable to ci build job

Signed-off-by: Robert Waffen <[email protected]>

Author: rwaffen

.github/workflows/ci.yaml

@@ -49,6 +49,7 @@ jobs:
             RUBYGEM_PUPPET_METADATA=${{ matrix.rubygem_puppet_metadata }}
             RUBYGEM_OVERCOMMIT=${{ matrix.rubygem_overcommit }}
             RUBYGEM_MODULESYNC=${{ matrix.rubygem_modulesync }}
+            RUBYGEM_BUNDLER=${{ matrix.rubygem_bundler }}
 
       - name: Login to Docker Hub
         uses: docker/login-action@v3