ci: auto-generate potfile (frappe#40288)

.github/helper/update_pot_file.sh

@@ -0,0 +1,40 @@
+#!/bin/bash
+set -e
+cd ~ || exit
+
+echo "Setting Up Bench..."
+
+pip install frappe-bench
+bench -v init frappe-bench --skip-assets --skip-redis-config-generation --python "$(which python)"
+cd ./frappe-bench || exit
+
+echo "Get ERPNext..."
+bench get-app --skip-assets erpnext "${GITHUB_WORKSPACE}"
+
+echo "Generating POT file..."
+bench generate-pot-file --app erpnext
+
+cd ./apps/erpnext || exit
+
+echo "Configuring git user..."
+git config user.email "developers@erpnext.com"
+git config user.name "frappe-pr-bot"
+
+echo "Setting the correct git remote..."
+# Here, the git remote is a local file path by default. Let's change it to the upstream repo.
+git remote set-url upstream https://github.com/frappe/erpnext.git
+
+echo "Creating a new branch..."
+isodate=$(date -u +"%Y-%m-%d")
+branch_name="pot_${BASE_BRANCH}_${isodate}"
+git checkout -b "${branch_name}"
+
+echo "Commiting changes..."
+git add .
+git commit -m "chore: update POT file"
+
+gh auth setup-git
+git push -u upstream "${branch_name}"
+
+echo "Creating a PR..."
+gh pr create --fill --base "${BASE_BRANCH}" --head "${branch_name}" -R frappe/erpnext

.github/workflows/generate-pot-file.yml

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+# This workflow is agnostic to branches. Only maintain on develop branch.
+# To add/remove branches just modify the matrix.
+
+name: Regenerate POT file (translatable strings)
+on:
+  schedule:
+    # 9:30 UTC => 3 PM IST Sunday
+    - cron: "30 9 * * 0"
+  workflow_dispatch:
+
+jobs:
+  regeneratee-pot-file:
+    name: Release
+    runs-on: ubuntu-latest
+    strategy:
+      fail-fast: false
+      matrix:
+        branch: ["develop"]
+    permissions:
+      contents: write
+
+    steps:
+        - name: Checkout
+          uses: actions/checkout@v4
+          with:
+            ref: ${{ matrix.branch }}
+
+        - name: Setup Python
+          uses: actions/setup-python@v5
+          with:
+            python-version: "3.12"
+
+        - name: Run script to update POT file
+          run: |
+            bash ${GITHUB_WORKSPACE}/.github/helper/update_pot_file.sh
+          env:
+            GH_TOKEN: ${{ secrets.RELEASE_TOKEN }}
+            BASE_BRANCH: ${{ matrix.branch }}