ci: use GALAXY_API_KEY secret

Author: markosamuli

.github/workflows/pipeline.yml

@@ -119,4 +119,4 @@ jobs:
       - name: galaxy
         uses: robertdebock/[email protected]
         with:
-          galaxy_api_key: ${{ secrets.galaxy_api_key }}
+          galaxy_api_key: ${{ secrets.GALAXY_API_KEY }}