fix(ci): do not add materials on pull_request (#722)

Signed-off-by: Miguel Martinez Trivino <[email protected]>

Author: migmartri

.github/workflows/codeql.yml

@@ -64,6 +64,7 @@ jobs:
           category: "/language:${{matrix.language}}"
 
       - name: Add Attestation (Sarif results)
+        if: ${{ github.event_name != 'pull_request' }}
         run: |
           chainloop attestation add --name sarif-results --value ${{steps.codeqlresults.outputs.sarif-output}}/go.sarif
 
@@ -84,4 +85,4 @@ jobs:
       - name: Mark attestation as cancelled
         if: ${{ cancelled() && github.event_name != 'pull_request' }}
         run: |
-          chainloop attestation reset --trigger cancellation
+          chainloop attestation reset --trigger cancellation