ci: install ripgrep for real search regressions

.gitea/workflows/ci.yml

@@ -23,6 +23,9 @@ jobs:
         run: |
           set -eu
           test "$(git rev-parse HEAD)" = "$GITHUB_SHA"
+          apt-get update
+          apt-get install -y --no-install-recommends ripgrep
+          rg --version
           python3 -m venv "$RUNNER_TEMP/bootstrap"
           "$RUNNER_TEMP/bootstrap/bin/pip" install uv
           "$RUNNER_TEMP/bootstrap/bin/uv" venv --python 3.11 "$RUNNER_TEMP/ci-venv"