make png unique to PR and fix syntax error

Author: JacobBarthelmeh

.github/workflows/sftp-benchmark.yml

@@ -77,11 +77,18 @@ jobs:
         run: make
 
       - name: Get Saved OpenSSH Upload Results
-        uses: actions/downlad-artifact@v4
+        uses: actions/download-artifact@v4
+        continue-on-error: true
         with:
           path: ./wolfssh/
           artifact_id: 'openssh-upload'
 
+      - name: Get Saved OpenSSH Download Results
+        uses: actions/download-artifact@v4
+        continue-on-error: true
+        with:
+          path: ./wolfssh/
+          artifact_id: 'openssh-download'
 
       - name: Put test key in authorized keys file
         run: |
@@ -99,24 +106,36 @@ jobs:
       - name: Store Upload Speed PNG
         uses: actions/upload-artifact@v4
         with:
-          name: upload-results.png
+          name: upload-results-pr${{ github.event.pull_request.number }}.png
           path: wolfssh/upload-results.png
+          retention-days: 2
 
       - name: Store Download Speed PNG
         uses: actions/upload-artifact@v4
         with:
-          name: download-results.png
+          name: download-results-pr${{ github.event.pull_request.number }}.png
           path: wolfssh/download-results.png
+          retention-days: 2
+
+      - name: Upload OpenSSH Download Results
+        if: steps.download-artifact.outputs.found != 'true'
+        uses: actions/upload-artifact@v4
+        with:
+          name: openssh-download
+          path: wolfssh/openssh-average-download.csv
+
+      - name: Upload OpenSSH Upload Results
+        if: steps.download-artifact.outputs.found != 'true'
+        uses: actions/upload-artifact@v4
+        with:
+          name: openssh-upload
+          path: wolfssh/openssh-average-upload.csv
 
       - name: Comment on PR about performance
         env:
           GH_TOKEN: ${{ secrets.GITHUB_TOKEN }}
         run: |
           PR_NUMBER=$(jq --raw-output .pull_request.number "$GITHUB_EVENT_PATH")
           gh pr comment $PR_NUMBER --body "Attached is the performance results" \
-            --attach download-results.png \
-            --attach upload-results.png
-
-      artifacts:
-        'openssh-upload': { 'path': 'wolfssh/openssh-average-upload.csv' }
-        'openssh-download': { 'path': 'wolfssh/openssh-average-download.csv' }
+            --attach download-results-pr${{ github.event.pull_request.number }}.png \
+            --attach upload-results-pr${{ github.event.pull_request.number }}.png