The split Dependabot PRs (#init, #analyze) each bumped one path in security.yml,
leaving the sibling at v4.36.2 -> CodeQL fails 'init and analyze must match'.
Bump both to v4.36.3 (SHA 54f647b) in one commit, and add a dependabot groups
block so codeql-action (init/analyze/upload-sarif, one monorepo release) always
lands as a single grouped PR. Fixes the two red Security Scan runs.