evaluate the date string please

Author: Tmonster

.github/workflows/RunBenchmark.yml

@@ -111,7 +111,7 @@ jobs:
       - name: Push changes
         uses: ad-m/github-push-action@master
         env:
-          branch_name: results-${{ date "+%Y-%m-%d-%Hh%Mm" }}
+          branch_name: results-`date +%Y-%m-%d-%Hh%Mm`
         with:
           github_token: ${{ secrets.GITHUB_TOKEN }}
           ref: ${{ env.branch_name }}