fix(security): restore iac-security-high threshold to 1

Reverts commit 550d8a1 which changed iac-security-high from 1 to 2,
silently allowing one IaC high-severity vulnerability to pass the
security gate undetected. All thresholds should be consistent at 1.

Author: cx-noam-brendel

.github/workflows/checkmarx-one-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 phoenix --threshold "sast-critical=1;sast-high=1;sast-medium=1;sast-low=1;sca-critical=1;sca-high=1;sca-medium=1;sca-low=1;iac-security-critical=1;iac-security-high=2;iac-security-medium=1;iac-security-low=1;"
+          additional_params: --tags phoenix --threshold "sast-critical=1;sast-high=1;sast-medium=1;sast-low=1;sca-critical=1;sca-high=1;sca-medium=1;sca-low=1;iac-security-critical=1;iac-security-high=1;iac-security-medium=1;iac-security-low=1;"