fix(actions): add missing aws credentials config (#34)

Author: vascoalramos

.github/workflows/prereleased.yml

@@ -190,6 +190,12 @@ jobs:
       id: count_vulnerabilities
       run: echo "value=$(grep -cE "(medium|high|critical) vulnerability" ${{ steps.scan_sbom.outputs.sarif }})" >> $GITHUB_OUTPUT
 
+    - name: Configure AWS credentials
+      uses: aws-actions/configure-aws-credentials@v1
+      with:
+        role-to-assume: ${{ secrets.AWS_S3_SBOMS_ROLE_ARN }}
+        aws-region: ${{ env.AWS_S3_REGION }}
+
     - name: Copy SBOM to S3
       run: |
         aws s3 cp ${{ env.SBOM_FILENAME }}.spdx.json s3://repos-sboms/${{ github.event.repository.name }}/lambda-${{ env.SBOM_FILENAME }}.spdx.json