Change things up with Crowdin and release-related workflows (#4833)

* Alternative way of doing Crowdin...

* Limit the upload translations workflow to V3/develop

* Make the workflow close and reopen the PR automatically while I'm at it

* Add a workflow for preparing PRs for release

* Make the crowdin env vars local to the step requiring them

* Move dev bump to Publish Release workflow

.github/workflows/publish_release.yml

@@ -0,0 +1,67 @@
+name: Publish the release
+on:
+  push:
+    tags:
+      - "*"
+
+jobs:
+  release_to_pypi:
+    if: github.repository == 'Cog-Creators/Red-DiscordBot'
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v2
+      - name: Set up Python
+        uses: actions/setup-python@v2
+        with:
+          python-version: '3.8'
+      - name: Install dependencies
+        run: |
+          python -m pip install --upgrade pip
+          pip install setuptools wheel twine
+      - name: Build and publish
+        env:
+          TWINE_USERNAME: __token__
+          TWINE_PASSWORD: ${{ secrets.pypi_token }}
+        run: |
+          python setup.py sdist bdist_wheel
+          twine upload dist/*
+
+  pr_dev_bump:
+    needs: release_to_pypi
+    runs-on: ubuntu-latest
+    steps:
+      # Version bump to development version
+      - name: Update Red version number to dev
+        id: bump_version_dev
+        run: |
+          python .github/workflows/scripts/bump_version.py
+        env:
+          PYTHONPATH: ${{ github.workspace }}:${{ env.PYTHONPATH }}
+          DEV_BUMP: '1'
+
+      - name: Create Pull Request
+        id: cpr_bump_dev
+        uses: peter-evans/create-pull-request@v3
+        with:
+          token: ${{ secrets.GITHUB_TOKEN }}
+          commit-message: Version bump to ${{ steps.bump_version_dev.outputs.new_version }}
+          title: Version bump to ${{ steps.bump_version_dev.outputs.new_version }}
+          body: |
+            This is an automated PR.
+            Please ensure that there are no errors or invalid files are in the PR.
+          labels: "Automated PR, Changelog Entry: Skipped"
+          branch: "automated/pr_bumps/${{ steps.bump_version_dev.outputs.new_version }}"
+          author: github-actions[bot] <41898282+github-actions[bot]@users.noreply.github.com>
+
+      - name: Close and reopen the PR with different token to trigger CI
+        uses: actions/github-script@v3
+        env:
+          PR_NUMBER: ${{ steps.cpr_bump_dev.outputs.pull-request-number }}
+          PR_OPERATION: ${{ steps.cpr_bump_dev.outputs.pull-request-operation }}
+        with:
+          github-token: ${{ secrets.cogcreators_bot_repo_scoped }}
+          script: |
+            const script = require(
+              `${process.env.GITHUB_WORKSPACE}/.github/workflows/scripts/close_and_reopen_pr.js`
+            );
+            console.log(await script({github, context}));