chore: update markdown-lint action versions and SHA pins (#1719)

Co-authored-by: copilot-swe-agent[bot] <198982749+Copilot@users.noreply.github.com>
Co-authored-by: pelikhan <4175913+pelikhan@users.noreply.github.com>

Author: Copilot

.github/workflows/markdown-lint.yml

@@ -24,19 +24,19 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v6
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # v7.0.1
 
       - name: Lint markdown
         id: lint
         continue-on-error: true
-        uses: DavidAnson/markdownlint-cli2-action@v20
+        uses: DavidAnson/markdownlint-cli2-action@6bf21b07787794f89a243495939cd651942aeabe # v24.1.0
         with:
           globs: |
             **/*.md
 
       - name: File issue for lint failure on main
         if: steps.lint.outcome == 'failure' && github.event_name == 'push' && github.ref == 'refs/heads/main'
-        uses: actions/github-script@v8
+        uses: actions/github-script@3a2844b7e9c422d3c10d287c895573f7108da1b3 # v9.0.0
         with:
           script: |
             const title = 'Markdown lint failure on main'