Update ttt.yml

Author: sunli829

.github/workflows/ttt.yml

@@ -37,12 +37,10 @@ jobs:
                       --volume "${PWD}/dist:/artifacts"
                   install: |
                       apt-get update
-                      apt-get install -y --no-install-recommends software-properties-common curl git gcc patch
-                      curl https://pyenv.run | bash
-                      export PATH="$HOME/.pyenv/bin:$PATH"
-                      eval "$(pyenv init --path)"
-                      pyenv install ${{ matrix.python-version }}
-                      pyenv global ${{ matrix.python-version }}
+                      apt-get install -y --no-install-recommends software-properties-common curl
+                      sudo add-apt-repository ppa:deadsnakes/ppa
+                      sudo apt update
+                      apt-get install -y python${{ matrix.python-version }}-venv
                   run: |
                       ls -lrth /artifacts
                       PYTHON=python${{ matrix.python-version }}