Set up automation for updating pytype and pyright versions.

.github/workflows/update_mypy_pyright.yml

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+name: Update mypy, pytype and pyright
+
+on:
+    schedule:
+      # Runs every day at 00:00 UTC
+      - cron: '0 0 * * *'
+
+jobs:
+    build:
+        strategy:
+            matrix:
+                os: [ubuntu-latest]
+        runs-on: ${{ matrix.os }}
+        steps:
+            - uses: actions/checkout@v2
+            - name: Set up Python
+              uses: actions/setup-python@v4
+              with:
+                  python-version: "3.11"
+            - name: Install dependencies
+              run: |
+                  pip install requests
+            - name: Run script
+              run: python scripts/check_for_update_dependency.py
+            - uses: peter-evans/create-pull-request@v3
+              with:
+                token: ${{ secrets.GITHUB_TOKEN }}
+                title: "Daily dependencies update"
+                commit-message: "Updated dependencies after the daily check"
+                body: |
+                    There appear to be some dependency updates in ${{ github.sha }}. This pull request
+                    uses the script to find and update these dependencies.
+                base: ${{ github.head_ref }}
+    # https://github.community/t/run-github-actions-job-only-if-previous-job-has-failed/174786/2
+    create-issue-on-failure:
+      name: Create an issue if Update mypy, pytype and pyright failed
+      runs-on: ubuntu-latest
+      needs: [build]
+      if: ${{ github.repository == 'python/typeshed' && always() && (needs.build.result == 'failure') }}
+      steps:
+        - uses: actions/github-script@v6
+          with:
+            github-token: ${{ secrets.GITHUB_TOKEN }}
+            script: |
+              await github.rest.issues.create({
+                owner: "python",
+                repo: "typeshed",
+                title: `Update mypy, pytype and pyright failed on ${new Date().toDateString()}`,
+                body: "Update mypy, pytype and pyright runs are listed here: https://github.com/python/typeshed/actions/workflows/update_mypy_pyright.yml",
+              })

scripts/check_for_update_dependency.py

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+import re
+import requests
+from typing import List
+
+from typing import Optional
+
+
+def get_latest_version(package_name: str) -> Optional[str]:
+    """Fetch the latest version of a package from PyPI."""
+    response = requests.get(f"https://pypi.org/pypi/{package_name}/json")
+    response.raise_for_status()
+    data = response.json()
+    return str(data["info"]["version"])
+
+
+def update_versions(file_path: str) -> None:
+    with open(file_path, "r") as file:
+        content = file.readlines()
+
+    pattern = re.compile(r"^(pytype|mypy)==([\d.]+)")
+
+    updated_content: List[str] = []
+
+    for line in content:
+        match = pattern.match(line)
+        if match:
+            package_name = match.group(1)
+            current_version = match.group(2)
+            latest_version = get_latest_version(package_name)
+            if latest_version and current_version != latest_version:
+                print(f"Updating {package_name} from {current_version} to {latest_version}")
+                line = line.replace(current_version, latest_version)
+        updated_content.append(line)
+
+    with open(file_path, "w") as file:
+        file.writelines(updated_content)
+
+
+def update_pyright_version(file_path: str) -> None:
+    """Update pyright version in a TOML configuration file."""
+    with open(file_path, "r", encoding="utf-8") as file:
+        lines = file.readlines()
+
+    latest_version = get_latest_version("pyright")
+    if latest_version:
+        updated_lines = []
+        for line in lines:
+            if line.startswith("pyright_version = "):
+                updated_lines.append(f'pyright_version = "{latest_version}"\n')
+                print(f"Updated pyright to version {latest_version} in {file_path}")
+            else:
+                updated_lines.append(line)
+
+        with open(file_path, "w", encoding="utf-8") as file:
+            file.writelines(updated_lines)
+
+
+file_paths: List[str] = ["requirements-tests.txt", "pyproject.toml"]
+
+if __name__ == "__main__":
+    for file_path in file_paths:
+        if file_path.endswith(".txt"):
+            update_versions(file_path)
+        elif file_path.endswith(".toml"):
+            update_pyright_version(file_path)