Update action-markdownlint.yml

Author: Raj-StepSecurity

.github/workflows/action-markdownlint.yml

@@ -6,10 +6,10 @@ on:
   push:
     branches: [ main ]
 permissions:
-  contents: write
+  contents: read
 jobs:
   call-markdown-lint:
-    uses: step-security/workflow-playground/.github/workflows/action-markdown-lint.yml@main
+    uses: step-security/workflow-playground/.github/workflows/action-markdown-lint.yml@2d61f104b186b3a4299da1cab2144ff662842898
     with:
       action-tag: ${{ github.head_ref || github.ref_name }}