feat: Add action to run toxgen periodically (#4805)

### Description Run `scripts/generate-test-files.sh` in a GitHub action every Monday morning and create a PR with the changes. If there are already any toxgen PRs open, close them. Here's an example run of the action: https://github.com/sentrivana/sentry-python/actions/runs/17768312844 (from a fork of the repo so that I can test it) And an example PR: sentrivana#6 Action shamelessly stolen and adapted from sentry-cli. 🥔 #### Issues Closes #4050 #### Reminders - Please add tests to validate your changes, and lint your code using `tox -e linters`. - Add GH Issue ID _&_ Linear ID (if applicable) - PR title should use [conventional commit](https://develop.sentry.dev/engineering-practices/commit-messages/#type) style (`feat:`, `fix:`, `ref:`, `meta:`) - For external contributors: [CONTRIBUTING.md](../CONTRIBUTING.md), [Sentry SDK development docs](https://develop.sentry.dev/sdk/), [Discord community](https://discord.gg/Ww9hbqr) --------- Co-authored-by: Daniel Szoke <7881302+szokeasaurusrex@users.noreply.github.com>

Author: sentrivana

.github/workflows/update-tox.yml

@@ -0,0 +1,111 @@
+name: Update test matrix
+
+on:
+ workflow_dispatch:
+ schedule:
+ # early Monday morning
+ - cron: '23 3 * * 1'
+
+jobs:
+ update-tox:
+ name: Update test matrix
+ runs-on: ubuntu-latest
+ timeout-minutes: 10
+
+ permissions:
+ contents: write
+ pull-requests: write
+
+ steps:
+ - name: Setup Python
+ uses: actions/setup-python@v5
+ with:
+ python-version: 3.13
+
+ - name: Checkout repo
+ uses: actions/checkout@v5.0.0
+ with:
+ token: ${{ secrets.GITHUB_TOKEN }}
+
+ - name: Configure git
+ run: |
+ git config user.name 'github-actions[bot]'
+ git config user.email '41898282+github-actions[bot]@users.noreply.github.com'
+
+ - name: Run generate-test-files.sh
+ run: |
+ set -e
+ sh scripts/generate-test-files.sh
+
+ - name: Create branch
+ id: create-branch
+ run: |
+ COMMIT_TITLE="ci: 🤖 Update test matrix with new releases"
+ DATE=`date +%m/%d`
+ BRANCH_NAME="toxgen/update"
+
+ git checkout -B "$BRANCH_NAME"
+ git add --all
+ git commit -m "$COMMIT_TITLE"
+ git push origin "$BRANCH_NAME" --force
+
+ echo "branch_name=$BRANCH_NAME" >> $GITHUB_OUTPUT
+ echo "commit_title=$COMMIT_TITLE" >> $GITHUB_OUTPUT
+ echo "date=$DATE" >> $GITHUB_OUTPUT
+
+ - name: Create pull request
+ uses: actions/github-script@v8.0.0
+ with:
+ script: |
+ const branchName = '${{ steps.create-branch.outputs.branch_name }}';
+ const commitTitle = '${{ steps.create-branch.outputs.commit_title }}';
+ const date = '${{ steps.create-branch.outputs.date }}';
+ const prBody = `Update our test matrix with new releases of integrated frameworks and libraries.
+
+ ## How it works
+ - Scan PyPI for all supported releases of all frameworks we have a dedicated test suite for.
+ - Pick a representative sample of releases to run our test suite against. We always test the latest and oldest supported version.
+ - Update [tox.ini](tox.ini) with the new releases.
+
+ ## Action required
+ - If CI passes on this PR, it's safe to approve and merge. It means our integrations can handle new versions of frameworks that got pulled in.
+ - If CI doesn't pass on this PR, this points to an incompatibility of either our integration or our test setup with a new version of a framework.
+ - Check what the failures look like and either fix them, or update the [test config](scripts/populate_tox/config.py) and rerun [scripts/generate-test-files.sh](scripts/generate-test-files.sh). See [README.md](scripts/populate_tox/README.md) for what configuration options are available.
+
+ _____________________
+
+ _🤖 This PR was automatically created using [a GitHub action](.github/workflows/update-tox.yml)._`.replace(/^ {16}/gm, '')
+
+ // Close existing toxgen PRs as they're now obsolete
+
+ const { data: existingPRs } = await github.rest.pulls.list({
+ owner: context.repo.owner,
+ repo: context.repo.repo,
+ head: `${context.repo.owner}:${branchName}`,
+ state: 'open'
+ });
+
+ for (const pr of existingPRs) {
+ await github.rest.pulls.update({
+ owner: context.repo.owner,
+ repo: context.repo.repo,
+ pull_number: pr.number,
+ state: 'closed'
+ })
+ };
+
+ const { data: pr } = await github.rest.pulls.create({
+ owner: context.repo.owner,
+ repo: context.repo.repo,
+ title: commitTitle + ' (' + date + ')',
+ head: branchName,
+ base: '${{ github.ref_name }}',
+ body: prBody,
+ });
+
+ await github.rest.issues.addLabels({
+ owner: context.repo.owner,
+ repo: context.repo.repo,
+ issue_number: pr.number,
+ labels: ['Component: CI', 'Component: Tests']
+ });