Do not fail workflow on static analysis results upload failures

When Clippy finds lints, it already aborts the workflow. No double
failure is needed.

Author: AlexTMjugador

.github/workflows/oxipng.yml

@@ -156,6 +156,7 @@ jobs:
       - name: Upload analysis results to GitHub
         uses: github/codeql-action/upload-sarif@v3
         if: always() && matrix.target == 'x86_64-unknown-linux-gnu'
+        continue-on-error: true
         with:
           sarif_file: clippy-results.sarif
           category: clippy