Address Dan's review feedback on #748

Two small follow-ups:

1. minimumReleaseAge: 24 hours -> 1 hour. Dan flagged that 24h is
   overcautious for first-party Stacklok releases. Renovate itself
   only runs every 4h so 1h is effectively close to 0 while still
   protecting against same-day yanks/reverts.

2. prBodyNotes: drop "regenerates" where we're actually just syncing.
   Now precisely: "syncs reference assets (CLI help, Swagger) and
   regenerates the CRD MDX pages" for toolhive.

Co-Authored-By: Claude Opus 4.7 (1M context) <noreply@anthropic.com>

Author: rdimitrov

renovate.json

@@ -88,14 +88,14 @@
       "matchManagers": ["custom.regex"],
       "matchFileNames": ["**/.github/upstream-projects.yaml"],
       "schedule": ["at any time"],
-      "minimumReleaseAge": "24 hours",
+      "minimumReleaseAge": "1 hour",
       "minimumReleaseAgeBehaviour": "timestamp-optional",
       "ignoreUnstable": true,
       "rebaseWhen": "never",
       "recreateWhen": "never",
       "commitMessageTopic": "{{depName}}",
       "prBodyNotes": [
-        "After this PR opens, `.github/workflows/upstream-release-docs.yml` adds source-verified content edits for the new release. For `stacklok/toolhive`, the same workflow also regenerates reference docs (CLI help, Swagger, CRD schemas)."
+        "After this PR opens, `.github/workflows/upstream-release-docs.yml` adds source-verified content edits for the new release. For `stacklok/toolhive`, the same workflow also syncs reference assets (CLI help, Swagger) and regenerates the CRD MDX pages."
       ]
     }
   ]