fix: python version

Author: irtazaakram

.github/workflows/ci.yml

@@ -32,10 +32,10 @@ jobs:
           apt update &&
           apt install -y software-properties-common curl &&
           add-apt-repository ppa:deadsnakes/ppa -y &&
-          apt install -y python${PY_VER} python${PY_VER}-dev python${PY_VER}-venv &&
-          update-alternatives --install /usr/bin/python3 python3 /usr/bin/python${PY_VER} 1 &&
-          python3 -m ensurepip &&
-          python3 -m pip install --upgrade pip
+          apt install -y python$PY_VER python$PY_VER-dev python$PY_VER-venv &&
+          update-alternatives --install /usr/bin/python3 python3 /usr/bin/python$PY_VER 1 &&
+          python3 -m venv /tmp/venv &&
+          /tmp/venv/bin/pip install --upgrade pip
         "
         docker exec xqueue bash -c "python3 --version && which python3"