ci: upgrade min python version to 3.8

.cruft.json

@@ -10,7 +10,7 @@
             "github_url": "https://github.com/pycontw/mail_handler",
             "author_name": "Wei Lee",
             "author_email": "[email protected]",
-            "python_version": "3.7",
+            "python_version": "3.8",
             "dependency_management_tool": "poetry",
             "default_branch": "master",
             "use_strict_mypy_config": "n",

.github/workflows/master-updated.yaml

@@ -33,10 +33,10 @@ jobs:
           token: ${{ secrets.PERSONAL_ACCESS_TOKEN }}
           fetch-depth: 0
 
-      - name: Set up Python 3.7
+      - name: Set up Python 3.8
         uses: actions/setup-python@v5
         with:
-          python-version: "3.7"
+          python-version: "3.8"
 
       - name: Install dependencies
         run: |

tasks/env.py

@@ -7,7 +7,7 @@
 @task
 def clean(ctx: Context) -> None:
     """Remove virtual environment"""
-    ctx.run("poetry env remove 3.7", warn=True)
+    ctx.run("poetry env remove 3.8", warn=True)
 
 
 @task