Update benchmark.yml

.github/workflows/benchmark.yml

@@ -101,10 +101,6 @@ jobs:
           pip install torch-scatter torch-sparse -f https://data.pyg.org/whl/torch-$(python -c 'import torch; print(torch.__version__.split("+")[0])')+cpu.html
           pip install -e '.[dev, tracing]'
 
-      - name: Declare some variables
-        shell: bash
-        run: echo "sha_short=$(git rev-parse --short "$GITHUB_SHA")" >> "$GITHUB_ENV"
-
       - name: Write PR traces
         run: python benchmark/write.py --output_dir branch
 
@@ -121,7 +117,8 @@ jobs:
       - name: Prepare PR Message
         run: |
           echo 'MESSAGE<<EOF' >> $GITHUB_ENV
-          echo "Benchmark ${sha_short}" >> $GITHUB_ENV
+          echo "Benchmark (${github.event.pull_request.head.sha})" >> $GITHUB_ENV
+          echo '' >> $GITHUB_ENV
           echo 'Root Span Comparisons:' >> $GITHUB_ENV
           echo '```json' >> $GITHUB_ENV
           echo "$ROOT_SPAN_COMPARISON" | jq . >> $GITHUB_ENV
@@ -155,7 +152,7 @@ jobs:
       #     echo "EOF" >> $GITHUB_ENV
 
       - name: Comment on PR
-        uses: actions/github-script@v5
+        uses: actions/github-script@v7
         with:
           github-token: ${{secrets.GITHUB_TOKEN}}
           script: |