Update actions/setup-python action to v6

This PR contains the following updates:

| Update | Change |
|---|---|
| lockFileMaintenance | All locks refreshed |

🔧 This Pull Request updates lock files to use the latest dependency
versions.

---

### Configuration

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View the [repository job
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.github/workflows/lint.yaml

@@ -19,7 +19,7 @@ jobs:
         with:
           version: 3.x
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install uv

.github/workflows/release.yaml

@@ -13,7 +13,7 @@ jobs:
         uses: actions/checkout@v5
 
       - name: Setup Python
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
 
       - name: Install uv
         uses: astral-sh/setup-uv@v6

.github/workflows/tests.yaml

@@ -19,7 +19,7 @@ jobs:
         with:
           version: 3.x
       - name: Set up Python ${{ matrix.python-version }}
-        uses: actions/setup-python@v5
+        uses: actions/setup-python@v6
         with:
           python-version: ${{ matrix.python-version }}
       - name: Install uv

smsbot/cli.py

@@ -49,7 +49,11 @@ def main():
     # Override with environment variables, named SMSBOT_<SECTION>_<VALUE>
     for key, value in os.environ.items():
         if key.startswith(ENVIRONMENT_PREFIX):
+            try:
                 section, option = key[7:].lower().split("_", 1)
+            except ValueError:
+                logging.debug("Invalid environment variable format: %s", key)
+                continue
             logging.debug("Overriding config %s/%s = %s", section, option, value)
             if not config.has_section(section):
                 config.add_section(section)