add permissions

Author: oscartbeaumont

.github/workflows/tinybird-cd.yml

@@ -11,6 +11,9 @@ on:
 
 concurrency: ${{ github.workflow }}-${{ github.event.ref }}
 
+permissions:
+  contents: read
+
 jobs:
   cd:
     name: Deploy

.github/workflows/tinybird-ci.yml

@@ -12,6 +12,9 @@ on:
 
 concurrency: ${{ github.workflow }}-${{ github.event.pull_request.number }}
 
+permissions:
+  contents: read
+
 jobs:
   ci:
     name: Validate