Fix indentation

.github/workflows/build.yaml

@@ -18,7 +18,7 @@ jobs:
             version: premium
           - project: sosci
             version: premium
-      steps:
+    steps:
       - name: Fix up git URLs
         run: echo -e '[url "https://github.com/"]\n  insteadOf = "git@github.com:"' >> ~/.gitconfig
         shell: bash