Fix ingress probe image selection

.gitea/workflows/runtime-distribution.yml

@@ -342,7 +342,7 @@ jobs:
           python tools/checks/managed-ingress-drill.py
           --caddy-image "$MANAGED_INGRESS_IMAGE"
           --load-balancer-image "$LOAD_BALANCER_IMAGE"
-          --probe-image "$(jq -r '.platforms[\"linux/amd64\"]' runtime-output/api-metadata.json)"
+          --probe-image "$(jq -r '.platforms["linux/amd64"]' runtime-output/api-metadata.json)"
       - name: Publish immutable Gitea release assets
         working-directory: govoplan
         env:

tests/test_runtime_distribution_build.py

@@ -156,6 +156,11 @@ class RuntimeDistributionBuildTests(unittest.TestCase):
         )
         self.assertIn("runtime-smoke-amd64.json", workflow)
         self.assertIn("runtime-smoke-arm64.json", workflow)
+        self.assertIn(
+            "jq -r '.platforms[\"linux/amd64\"]' runtime-output/api-metadata.json",
+            workflow,
+        )
+        self.assertNotIn(".platforms[\\\"linux/amd64\\\"]", workflow)
 
     def test_workflow_binds_the_release_tag_to_the_workflow_commit(self) -> None:
         workflow = (ROOT / ".gitea/workflows/runtime-distribution.yml").read_text(