ci: pin third-party GitHub Actions to verified release SHAs

Author: Vamshi-Microsoft

.github/workflows/broken-links-checker.yml

@@ -24,7 +24,17 @@ jobs:
       - name: Get changed markdown files (PR only)
         id: changed-markdown-files
         if: github.event_name == 'pull_request'
-        uses: tj-actions/changed-files@9426d40962ed5378910ee2e21d5f8c6fcbf2dd96 # v47.0.6
+        env:
+          BASE_SHA: ${{ github.event.pull_request.base.sha }}
+          HEAD_SHA: ${{ github.event.pull_request.head.sha }}
+        run: |
+          changed_files=$(git diff --name-only --diff-filter=ACMR "$BASE_SHA" "$HEAD_SHA" -- '*.md' | tr '\n' ' ' | sed 's/ *$//')
+          if [ -n "$changed_files" ]; then
+            echo "any_changed=true" >> "$GITHUB_OUTPUT"
+          else
+            echo "any_changed=false" >> "$GITHUB_OUTPUT"
+          fi
+          echo "all_changed_files=$changed_files" >> "$GITHUB_OUTPUT"
         with:
           files: |
             **/*.md
@@ -34,7 +44,7 @@ jobs:
       - name: Check Broken Links in Changed Markdown Files
         id: lychee-check-pr
         if: github.event_name == 'pull_request' && steps.changed-markdown-files.outputs.any_changed == 'true'
-        uses: lycheeverse/lychee-action@v2.8.0
+        uses: lycheeverse/lychee-action@8646ba30535128ac92d33dfc9133794bfdd9b411 # v2.8.0
         with:
           args: >
             --verbose --no-progress --exclude ^https?://
@@ -47,7 +57,7 @@ jobs:
       - name: Check Broken Links in All Markdown Files in Entire Repo (Manual Trigger)
         id: lychee-check-manual
         if: github.event_name == 'workflow_dispatch'
-        uses: lycheeverse/lychee-action@v2.8.0
+        uses: lycheeverse/lychee-action@8646ba30535128ac92d33dfc9133794bfdd9b411 # v2.8.0
         with:
           args: >
             --verbose --no-progress --exclude ^https?://

.github/workflows/pr-title-checker.yml

@@ -17,6 +17,6 @@ jobs:
     runs-on: ubuntu-latest
     if: ${{ github.event_name != 'merge_group' }}
     steps:
-      - uses: amannn/action-semantic-pull-request@v6
+      - uses: amannn/action-semantic-pull-request@48f256284bd46cdaab1048c3721360e808335d50 # v6.1.1
         env:
           GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}

.github/workflows/test.yml

@@ -102,7 +102,7 @@ jobs:
           github.event_name == 'pull_request' &&
           github.event.pull_request.head.repo.fork == false &&
           env.skip_tests == 'false'
-        uses: MishaKav/pytest-coverage-comment@26f986d2599c288bb62f623d29c2da98609e9cd4  # v1.6.0
+        uses: MishaKav/pytest-coverage-comment@e48ae95fa406cefacc7fbdd79949122795569961 # v1.8.0
         with:
           pytest-xml-coverage-path: coverage.xml
           junitxml-path: pytest.xml