{CI} Suppress false positives in Credential Scanner (#32669)

Author: necusjz

scripts/ci/credscan/CredScanSuppressions.json

@@ -671,6 +671,18 @@
         "src/azure-cli/azure/cli/command_modules/cognitiveservices/tests/latest/data/snowflake_user_pwd.yaml"
       ],
       "_justification": "[cognitiveservices] request password for testing"
+    },
+    {
+      "file": [
+        "src\\azure-cli\\azure\\cli\\command_modules\\postgresql\\flexible_server_custom_postgres.py"
+      ],
+      "_justification": "[PostgreSQL] False positive"
+    },
+    {
+      "file": [
+        "src\\azure-cli\\azure\\cli\\command_modules\\network\\tests\\latest\\test_network_commands.py"
+      ],
+      "_justification": "[Network] False positive"
     }
   ]
 }