Fixes to license GHA and version updates.

Signed-off-by: David Venable <dlv@amazon.com>

Author: dlvenable

.github/workflows/license-header-check.yml

@@ -20,12 +20,12 @@ jobs:
 
     steps:
       - name: Checkout code
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           fetch-depth: 0
 
       - name: Setup Python
-        uses: actions/setup-python@v4
+        uses: actions/setup-python@v6
         with:
           python-version: '3.9'
 
@@ -36,20 +36,22 @@ jobs:
           
       - name: Comment on PR
         if: failure() && steps.license-check.outputs.violations != ''
-        uses: actions/github-script@v7
+        uses: actions/github-script@v8
         with:
           script: |
-            const violations = `${{ steps.license-check.outputs.violations }}`;
+            const violations = process.env.VIOLATIONS;
             
-            const body = `## ⚠️ License Header Violations Found
-            
-            The following newly added files are missing required license headers:
-            
-            ${violations}
-            
-            Please add the appropriate license header to each file and push your changes.
-            
-            **See the license header requirements:** https://github.com/opensearch-project/data-prepper/blob/main/CONTRIBUTING.md#license-headers`;
+            const body = [
+              '## ⚠️ License Header Violations Found',
+              '',
+              'The following newly added files are missing required license headers:',
+              '',
+              violations,
+              '',
+              'Please add the appropriate license header to each file and push your changes.',
+              '',
+              '**See the license header requirements:** https://github.com/opensearch-project/data-prepper/blob/main/CONTRIBUTING.md#license-headers'
+            ].join('\n');
 
             const { data: comments } = await github.rest.issues.listComments({
               owner: context.repo.owner,
@@ -76,4 +78,6 @@ jobs:
                 issue_number: context.issue.number,
                 body: body
               });
-            }
+            }
+        env:
+          VIOLATIONS: ${{ steps.license-check.outputs.violations }}