Update Python version to 3.13 in workflows and metadata

Author: lcd1232

.github/workflows/publish.yml

@@ -15,7 +15,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: "3.9"
+          python-version: "3.13"
 
       - name: Install build tools
         run: |

.github/workflows/test-publish.yml

@@ -21,7 +21,7 @@ jobs:
       - name: Set up Python
         uses: actions/setup-python@v5
         with:
-          python-version: "3.11"
+          python-version: "3.13"
 
       - name: Install uv
         uses: astral-sh/setup-uv@v3

.github/workflows/test.yml

@@ -13,7 +13,7 @@ jobs:
       fail-fast: false
       matrix:
         os: [ubuntu-latest, windows-latest, macOS-latest]
-        python-version: ["3.8", "3.9", "3.10", "3.11"]
+        python-version: ["3.8", "3.9", "3.10", "3.11", "3.12", "3.13"]
 
     steps:
     - name: Check out repository
@@ -42,7 +42,7 @@ jobs:
         uv run pytest tests/ -v --cov=tempmail --cov-report=xml --cov-report=term-missing
 
     - name: Upload coverage to Codecov
-      if: matrix.os == 'ubuntu-latest' && matrix.python-version == '3.11'
+      if: matrix.os == 'ubuntu-latest' && matrix.python-version == '3.13'
       uses: codecov/codecov-action@v5
       with:
         files: ./coverage.xml

pyproject.toml

@@ -18,6 +18,8 @@ classifiers = [
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
+    "Programming Language :: Python :: 3.12",
+    "Programming Language :: Python :: 3.13",
     "License :: OSI Approved :: MIT License",
     "Operating System :: OS Independent",
     "Development Status :: 5 - Production/Stable",