ci: update workflows.

Author: funilrys

.github/workflows/branches.yml

@@ -11,6 +11,9 @@ on:
   schedule:
     - cron: "0 0 * * *"
 
+permissions:
+  contents: read
+
 jobs:
   lint:
     name: Lint Extension
@@ -123,4 +126,3 @@ jobs:
       - name: Run example (with dynamic scaling)
         run: |
           python examples/data_filter.py dynamic-scaling
-

.github/workflows/main.yml

@@ -84,6 +84,9 @@ jobs:
     needs: [lint]
     name: "[${{ matrix.os }}-py${{ matrix.python_version }}] Integration Test"
 
+    permissions:
+      contents: read
+
     runs-on: "${{ matrix.os }}"
 
     strategy: