Automatically open a PR to bump the calver (#4167)

* Update our tools package to Swift 6.1

Also improves the package layout with subdirectories 📁

* Update GenerateSDKMocks to be an Async command.

* Add a tool to bump the project CalVer every month.

* Add a workflow to automatically bump the calendar version.

Note: This only does year & month, the patch is handled by the release script.

.github/workflows/automatic-calendar-version.yml

@@ -0,0 +1,42 @@
+name: Automatic Calendar Version 
+on:
+  schedule:
+    # At 03:00 UTC every Tuesday in preparation for an RC.
+    # The tool assumes the release is published in 6-days (the following Monday).
+    # Note: Most of these runs will be no-op until the release month changes.
+    - cron: '0 3 * * 2'
+  workflow_dispatch:
+
+# Bumps the year and month, resetting the patch.
+# Patch bumps are handled by the release script.
+jobs:
+  automatic-calendar-version:
+    runs-on: macos-15
+    # Skip in forks
+    if: github.repository == 'element-hq/element-x-ios'
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v4
+
+      - name: Setup environment
+        run: 
+          source ci_scripts/ci_common.sh && setup_github_actions_environment
+
+      - name: Bump the CalVer if needed
+        run: swift run tools bump-calendar-version
+
+      - name: Create a PR for the new version
+        uses: peter-evans/create-pull-request@271a8d0340265f705b14b6d32b9829c1cb33d45e #v7.0.8
+        with:
+          token: ${{ secrets.ELEMENT_BOT_TOKEN }}
+          author: ElementRobot <releases@riot.im>
+          commit-message: Bump the calendar version ready for the next release
+          title: Bump the calendar version ready for the next release
+          body: |
+            - Version bump
+          labels: pr-build
+          branch: version/bump
+          base: develop
+          add-paths: |
+            *.yml
+            *.xcodeproj

.github/workflows/translations-pr.yml

@@ -31,6 +31,7 @@ jobs:
         uses: peter-evans/create-pull-request@271a8d0340265f705b14b6d32b9829c1cb33d45e #v7.0.8
         with:
           token: ${{ secrets.ELEMENT_BOT_TOKEN }}
+          author: ElementRobot <releases@riot.im>
           commit-message: Translations update
           title: Translations update
           body: |