ci: add SCA thresholds (#254)

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**Proposed Changes**

Adding SCA validation thresholds to CxOne scan

.github/workflows/ast-scan.yml

@@ -22,4 +22,4 @@ jobs:
           cx_tenant: ${{ secrets.AST_RND_SCANS_TENANT }}
           cx_client_id: ${{ secrets.AST_RND_SCANS_CLIENT_ID }}
           cx_client_secret: ${{ secrets.AST_RND_SCANS_CLIENT_SECRET }}
-          additional_params: --tags scs --threshold "sast-high=1; sast-medium=1; sast-low=1; iac-security-high=1; iac-security-medium=1; iac-security-low=1"
+          additional_params: --tags scs --threshold "sast-high=1; sast-medium=1; sast-low=1; sca-high=1; sca-medium=1; iac-security-high=1; iac-security-medium=1; iac-security-low=1"