[StepSecurity] ci: Harden GitHub Actions

Signed-off-by: StepSecurity Bot <bot@stepsecurity.io>

Author: step-security-bot

.github/workflows/ci.yml

@@ -6,6 +6,9 @@ on:
  pull_request:
  branches: [ main ]
 
+permissions:
+ contents: read
+
 jobs:
  test:
  runs-on: ${{ matrix.os }}

.github/workflows/publish.yml

@@ -5,6 +5,9 @@ on:
  types: [created]
  workflow_dispatch:
 
+permissions:
+ contents: read
+
 jobs:
  release-build:
  runs-on: ubuntu-latest