ci: update cron schedule and add include for oldest dependencies (#112)

---------

Co-authored-by: pre-commit-ci[bot] <66853113+pre-commit-ci[bot]@users.noreply.github.com>

Author: Borda

.github/workflows/ci-cloud.yml

@@ -5,7 +5,7 @@ on:
   push:
   workflow_dispatch:
   schedule:
-    - cron: "0 0 * * *"
+    - cron: "0 0 * * *" # every day at midnight UTC
 
 defaults:
   run:
@@ -39,6 +39,9 @@ jobs:
       matrix:
         os: ["ubuntu-22.04", "macOS-13", "windows-2022"]
         python-version: ["3.10"]
+        requires: ["latest"]
+        include:
+          - { os: "ubuntu-22.04", python-version: "3.9", requires: "oldest" }
 
     # Timeout: https://stackoverflow.com/a/59076067/4521646
     timeout-minutes: 25
@@ -52,6 +55,12 @@ jobs:
           python-version: ${{ matrix.python-version }}
           cache: "pip"
 
+      - name: Set min. dependencies
+        if: matrix.requires == 'oldest'
+        run: |
+          pip install 'lightning-utilities[cli]'
+          python -m lightning_utilities.cli requirements set-oldest --req_files='["requirements.txt"]'
+
       - name: Install package & dependencies
         run: |
           pip --version

.github/workflows/ci-testing.yml

@@ -5,6 +5,8 @@ on: # Trigger the workflow on push or pull request, but only for the main branch
   push: {}
   pull_request:
     branches: [main]
+  schedule:
+    - cron: "0 0 * * *" # every day at midnight UTC
 
 defaults:
   run:
@@ -21,10 +23,10 @@ jobs:
         requires: ["latest"]
         dependency: ["lightning"]
         include:
-          - { requires: "oldest", dependency: "lightning", os: "ubuntu-22.04", python-version: "3.9" }
-          - { requires: "latest", dependency: "pytorch_lightning", os: "ubuntu-24.04", python-version: "3.12" }
-          - { requires: "latest", dependency: "pytorch_lightning", os: "windows-2022", python-version: "3.12" }
-          - { requires: "latest", dependency: "pytorch_lightning", os: "macOS-13", python-version: "3.12" }
+          - { os: "ubuntu-22.04", python-version: "3.9", requires: "oldest", dependency: "lightning" }
+          - { os: "ubuntu-24.04", python-version: "3.12", requires: "latest", dependency: "pytorch_lightning" }
+          - { os: "windows-2022", python-version: "3.12", requires: "latest", dependency: "pytorch_lightning" }
+          - { os: "macOS-13", python-version: "3.12", requires: "latest", dependency: "pytorch_lightning" }
 
     # Timeout: https://stackoverflow.com/a/59076067/4521646
     timeout-minutes: 35