Automate power grid model version

.github/workflows/update-pgm-wheel-version.yml

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+# SPDX-FileCopyrightText: Contributors to the Power Grid Model project <powergridmodel@lfenergy.org>
+#
+# SPDX-License-Identifier: MPL-2.0
+
+name: Update PGM wheel version
+
+on:
+  schedule:
+    - cron: '0 2 * * *'
+  workflow_dispatch:
+
+permissions:
+  contents: write
+  pull-requests: write
+
+concurrency:
+  group: ${{ github.workflow }}
+  cancel-in-progress: true
+
+jobs:
+  update-pgm-wheel-version:
+    name: Update PGM wheel version
+    runs-on: ubuntu-latest
+
+    steps:
+      - name: generate GitHub App token
+        uses: actions/create-github-app-token@bcd2ba49218906704ab6c1aa796996da409d3eb1 # v3.2.0
+        id: generate-token
+        with:
+          client-id: ${{ secrets.RELEASE_BOT_APP_ID }}
+          private-key: ${{ secrets.RELEASE_BOT_PRIVATE_KEY }}
+          repositories: ${{ github.repository }}
+          permission-contents: write
+          permission-pull-requests: write
+
+      - name: Checkout repository
+        uses: actions/checkout@3d3c42e5aac5ba805825da76410c181273ba90b1 # 7.0.1
+        with:
+          fetch-depth: 0
+          token: ${{ steps.generate-token.outputs.token }}
+
+      - name: Check upstream release and update build.gradle
+        id: update-version
+        env:
+          GH_TOKEN: ${{ steps.generate-token.outputs.token }}
+        shell: bash
+        run: |
+          set -euo pipefail
+
+          latest_tag="$(gh api repos/PowerGridModel/power-grid-model/releases/latest --jq '.tag_name')"
+          latest_version="${latest_tag#v}"
+          current_version="$(sed -n 's/^def pgmVersion = "\(.*\)"$/\1/p' build.gradle)"
+
+          if [[ -z "${current_version}" ]]; then
+            echo "Could not find pgmVersion in build.gradle" >&2
+            exit 1
+          fi
+
+          if [[ "${current_version}" == "${latest_version}" ]]; then
+            echo "updated=false" >> "$GITHUB_OUTPUT"
+            exit 0
+          fi
+
+          sed -i "s/^def pgmVersion = \".*\"$/def pgmVersion = \"${latest_version}\"/" build.gradle
+
+          echo "updated=true" >> "$GITHUB_OUTPUT"
+          echo "current_version=${current_version}" >> "$GITHUB_OUTPUT"
+          echo "latest_version=${latest_version}" >> "$GITHUB_OUTPUT"
+          echo "branch_name=automation/update-pgm-wheel-version-${latest_version}" >> "$GITHUB_OUTPUT"
+
+      - name: Create pull request
+        if: steps.update-version.outputs.updated == 'true'
+        uses: peter-evans/create-pull-request@5f6978faf089d4d20b00c7766989d076bb2fc7f1
+        with:
+          token: ${{ steps.generate-token.outputs.token }}
+          commit-message: "build: update PGM wheel version to ${{ steps.update-version.outputs.latest_version }}"
+          branch: ${{ steps.update-version.outputs.branch_name }}
+          sign-commits: true
+          delete-branch: true
+          title: "build: update PGM wheel version to ${{ steps.update-version.outputs.latest_version }}"
+          body: |
+            Updates `pgmVersion` in `build.gradle` from `${{ steps.update-version.outputs.current_version }}` to `${{ steps.update-version.outputs.latest_version }}`.
+
+            Source: latest GitHub release from `PowerGridModel/power-grid-model`.
+          labels: |
+            dependencies