build(config.yml): upgrade python version in docker build test

.circleci/config.yml

@@ -92,6 +92,23 @@ jobs:
     working_directory: ~/project
     steps:
       - checkout
+      - run:
+        name: Install Python 3.9
+        command: |
+          curl https://repo.anaconda.com/miniconda/Miniconda3-latest-Linux-x86_64.sh --output miniconda.sh
+          bash miniconda.sh -b -p $HOME/miniconda
+          export PATH="$HOME/miniconda/bin:$PATH"
+          conda init bash
+          source ~/.bashrc
+          conda create -n myenv python=3.9 -y
+          conda activate myenv
+          python --version
+      - run:
+          name: Install Dependencies
+          command: |
+            pip install "pytest==7.3.1"
+            pip install "pytest-asyncio==0.21.1"
+            # Run pytest and generate JUnit XML report
       - run:
           name: Install Docker CLI (In case it's not already installed)
           command: |
@@ -134,12 +151,6 @@ jobs:
       - run: 
           name: Wait for app to be ready
           command: dockerize -wait http://localhost:4000 -timeout 1m
-      - run:
-          name: Install Dependencies
-          command: |
-            pip install "pytest==7.3.1"
-            pip install "pytest-asyncio==0.21.1"
-            # Run pytest and generate JUnit XML report
       - run:
           name: Run tests
           command: |