Update changelog and version after v3.31.9

CHANGELOG.md

@@ -2,10 +2,14 @@
 
 See the [releases page](https://github.com/github/codeql-action/releases) for the relevant changes to the CodeQL CLI and language packs.
 
-## 3.31.9 - 16 Dec 2025
+## [UNRELEASED]
 
 No user facing changes.
 
+## v3.31.9 - 16 Dec 2025
+
+This release rolls back 4.31.9 due to issues with that release. It is identical to 0.0.0.
+
 ## 3.31.8 - 11 Dec 2025
 
 - Update default CodeQL bundle version to 2.23.8. [#3354](https://github.com/github/codeql-action/pull/3354)
@@ -1091,3 +1095,4 @@ No user facing changes.
 - Add this changelog file. [#507](https://github.com/github/codeql-action/pull/507)
 - Improve grouping of analysis logs. Add a new log group containing a summary of metrics and diagnostics, if they were produced by CodeQL builtin queries. [#515](https://github.com/github/codeql-action/pull/515)
 - Add metrics and diagnostics summaries from custom query suites to the analysis summary log group. [#532](https://github.com/github/codeql-action/pull/532)
+

package-lock.json

@@ -1,12 +1,12 @@
 {
   "name": "codeql",
-  "version": "4.31.9",
+  "version": "3.31.10",
   "lockfileVersion": 3,
   "requires": true,
   "packages": {
     "": {
       "name": "codeql",
-      "version": "4.31.9",
+      "version": "3.31.10",
       "license": "MIT",
       "dependencies": {
         "@actions/artifact": "^4.0.0",

package.json

@@ -1,6 +1,6 @@
 {
   "name": "codeql",
-  "version": "3.31.9",
+  "version": "3.31.10",
   "private": true,
   "description": "CodeQL action",
   "scripts": {