gh-workflow: dump contexts

Signed-off-by: Johannes Schindelin <[email protected]>

Author: dscho

.github/workflows/dump-contexts.yml

@@ -0,0 +1,8 @@
+name: Dump Contexts
+on: release
+jobs:
+  dump:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Dump context
+        uses: crazy-max/ghaction-dump-context@v1