harden github action/workflow perms

Signed-off-by: Ramkumar Chinchani <rchincha@cisco.com>

.github/workflows/ci-cd.yml

@@ -9,6 +9,12 @@ on:
     types:
       - published
 name: build-test
+
+
+permissions:
+  contents: read
+  packages: write
+
 jobs:
   build-test:
     name: Build and test ZOT

.github/workflows/codeql-analysis.yml

@@ -20,6 +20,8 @@ on:
   schedule:
     - cron: '17 11 * * 0'
 
+permissions: read-all
+
 jobs:
   analyze:
     name: Analyze

.github/workflows/ecosystem-tools.yaml

@@ -9,6 +9,8 @@ on:
     types:
       - published
 
+permissions: read-all
+
 jobs:
   client-tools:
     name: Check client tools

.github/workflows/oci-conformance-action.yml

@@ -12,6 +12,8 @@ on:
     branches:
       - main
 
+permissions: read-all
+
 # A workflow run is made up of one or more jobs that can run sequentially or in parallel
 jobs:
   run:

.github/workflows/stale.yaml

@@ -3,6 +3,11 @@ on:
   schedule:
     - cron: '30 1 * * *'
 
+permissions:
+  contents: read
+  issues: read | write
+  pull-requests: read | write
+
 jobs:
   stale:
     runs-on: ubuntu-latest

.github/workflows/sync-golang-image.yaml

@@ -9,6 +9,10 @@ on:
 env:
   GOLANG_VERSION: 1.18
 
+permissions:
+  contents: read
+  packages: read | write
+
 jobs:
   sync-golang:
     name: 'sync'