add dependabot, use alls-green (#86)

Author: woodruffw

.github/dependabot.yml

@@ -0,0 +1,14 @@
+version: 2
+
+updates:
+  - package-ecosystem: pip
+    directory: /
+    schedule:
+      interval: weekly
+
+  - package-ecosystem: github-actions
+    directory: /
+    schedule:
+      interval: weekly
+    open-pull-requests-limit: 99
+    rebase-strategy: "disabled"

.github/workflows/ci.yml

@@ -29,6 +29,20 @@ jobs:
       - name: test
         run: make test INSTALL_EXTRA=test
 
+  all-tests-pass:
+    if: always()
+
+    needs:
+    - test
+
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: check test jobs
+        uses: re-actors/[email protected]
+        with:
+          jobs: ${{ toJSON(needs) }}
+
   lint:
     runs-on: ubuntu-latest
     steps: