upgrade github actions reusable workflows

.github/workflows/ai-revision.yaml

@@ -40,11 +40,11 @@ jobs:
         shell: bash --login {0}
     steps:
       - name: Checkout Repo
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with: 
           ref: ${{ inputs.branch }} 
       - name: Install environment
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: '3.11'
       - name: Install Manubot AI revision dependencies
@@ -64,7 +64,7 @@ jobs:
           #  https://github.com/manubot/manubot-ai-editor/blob/main/libs/manubot_ai_editor/env_vars.py
         run: manubot ai-revision --content-directory content/ --config-directory ci/
       - name: Create Pull Request
-        uses: peter-evans/create-pull-request@v6
+        uses: peter-evans/create-pull-request@v8
         with:
           commit-message: 'revise using AI model\n\nUsing the OpenAI model ${{ inputs.model }}'
           title: 'AI-based revision using ${{ inputs.model }}'

.github/workflows/manubot.yaml

@@ -50,7 +50,7 @@ jobs:
         shell: bash --login {0}
     steps:
       - name: Checkout Repository
-        uses: actions/checkout@v4
+        uses: actions/checkout@v6
         with:
           # fetch entire commit history to support get_rootstock_commit
           fetch-depth: 0
@@ -72,7 +72,7 @@ jobs:
           echo "DEFAULT_BRANCH_REF=refs/heads/$DEFAULT_BRANCH" >> $GITHUB_ENV
           echo "DEFAULT_BRANCH=$DEFAULT_BRANCH"
       - name: Cache
-        uses: actions/cache@v4
+        uses: actions/cache@v5
         with:
           path: ci/cache
           key: ci-cache-${{ github.ref }}
@@ -90,7 +90,7 @@ jobs:
       - name: Build Manuscript
         run: bash build/build.sh
       - name: Upload Artifacts
-        uses: actions/upload-artifact@v4
+        uses: actions/upload-artifact@v6
         with:
           name: manuscript-${{ github.run_id }}-${{ env.TRIGGERING_SHA_7 }}
           path: output