[ignore] Update CHANGELOG.md, sbom.spdx.json and annotation_unsupported.go for v2.18.1 release

Author: dcne-automation

CHANGELOG.md

@@ -2,6 +2,8 @@
 
 All notable changes to this project will be documented in this file.
 
+## 2.18.1 (November 07, 2025)
+
 ## 2.18.0 (November 7, 2025)
 
 IMPROVEMENTS:

sbom.spdx.json

@@ -3,14 +3,14 @@
     "dataLicense": "CC0-1.0",
     "SPDXID": "SPDXRef-DOCUMENT",
     "name": "./",
-    "documentNamespace": "https://anchore.com/syft/dir/6ee3a976-e641-48ae-8286-5f7f3256e96b",
+    "documentNamespace": "https://anchore.com/syft/dir/665c44df-ee10-4ca5-8114-e97ba7e1cb0c",
     "creationInfo": {
         "licenseListVersion": "3.27",
         "creators": [
             "Organization: Anchore, Inc",
             "Tool: syft-1.36.0"
         ],
-        "created": "2025-11-07T03:44:03Z"
+        "created": "2025-11-07T09:18:26Z"
     },
     "packages": [
         {