use python 3.10 for the workflow

Author: dclong

.github/workflows/build_images.yml

@@ -26,7 +26,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v2
         with:
-          python-version: 3.7
+          python-version: "3.10"
       - name: Install dockeree
         run: |
           pip3 install dockeree

.github/workflows/build_images_regular.yml

@@ -19,7 +19,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v2
         with:
-          python-version: 3.7
+          python-version: "3.10"
       - name: Install dockeree
         run: |
           pip3 install dockeree