CodeQL CLI version 2.15.5 was discontinued on 2025-04-03 alongside GitHub Enterprise Server 3.12 and will not be supported by the next minor release of the CodeQL Action. Please update to CodeQL CLI version 2.16.6 or later. For instance, if you have specified a custom version of the CLI using the 'tools' input to the 'init' Action, you can remove this input to use the default version. Alternatively, if you want to continue using CodeQL CLI version 2.15.5, you can replace 'github/codeql-action/*@V3' by 'github/codeql-action/*@v3.28.20' in your code scanning workflow to continue using this version of the CodeQL Action.