chore(ci): bump actions/github-script from 8 to 9

Bumps [actions/github-script](https://github.com/actions/github-script) from 8 to 9.
- [Release notes](https://github.com/actions/github-script/releases)
- [Commits](actions/github-script@v8...v9)

---
updated-dependencies:
- dependency-name: actions/github-script
  dependency-version: '9'
  dependency-type: direct:production
  update-type: version-update:semver-major
...

Signed-off-by: dependabot[bot] <support@github.com>

Author: dependabot[bot]

.github/workflows/deploy-develop.yml

@@ -397,7 +397,7 @@ jobs:
 
     steps:
       - name: Report deployment failure
-        uses: actions/github-script@v8
+        uses: actions/github-script@v9
         with:
           script: |
             await github.rest.repos.createCommitStatus({

.github/workflows/deploy-gate.yml

@@ -29,7 +29,7 @@ jobs:
 
     steps:
       - name: Check latest deploy-develop status
-        uses: actions/github-script@v8
+        uses: actions/github-script@v9
         with:
           script: |
             // Find the most recent deploy-develop workflow run on the develop branch

.github/workflows/markdown.yml

@@ -50,7 +50,7 @@ jobs:
 
       - name: Comment on PR if linting fails
         if: steps.markdown-lint.outcome == 'failure' && github.event_name == 'pull_request'
-        uses: actions/github-script@v8
+        uses: actions/github-script@v9
         with:
           script: |
             const marker = '<!-- markdown-lint-comment -->';

.github/workflows/proto.yml

@@ -54,7 +54,7 @@ jobs:
     steps:
       - name: Check for breaking-change label
         id: check-label
-        uses: actions/github-script@v8
+        uses: actions/github-script@v9
         with:
           script: |
             // Fetch current PR labels via API (not from event payload which is stale)
@@ -93,7 +93,7 @@ jobs:
 
       - name: Comment on PR if breaking changes detected
         if: failure() && steps.check-label.outputs.skip != 'true'
-        uses: actions/github-script@v8
+        uses: actions/github-script@v9
         with:
           script: |
             github.rest.issues.createComment({

.github/workflows/saga-validation.yml

@@ -153,7 +153,7 @@ jobs:
           retention-days: 30
 
       - name: Comment PR with validation results
-        uses: actions/github-script@v8
+        uses: actions/github-script@v9
         if: failure() && github.event_name == 'pull_request'
         with:
           script: |

.github/workflows/tag-develop.yml

@@ -13,7 +13,7 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Create lightweight tag
-        uses: actions/github-script@v8
+        uses: actions/github-script@v9
         with:
           script: |
             const sha = context.sha.substring(0, 7);