GitHub Actions: iOS unit testing cron job (#686)

.github/workflows/ios_unit_testing.yml

@@ -0,0 +1,40 @@
+name: iOS unit testing
+
+on:
+  workflow_dispatch:
+  # Runs at 00:00 UTC every day
+  schedule:
+    - cron: "0 0 * * *"
+
+concurrency:
+  group: ${{ github.workflow }}
+  cancel-in-progress: true
+
+defaults:
+  run:
+    shell: bash
+
+jobs:
+  unit-testing:
+    name: Run iOS unit tests
+    runs-on: macos-13
+    timeout-minutes: 60
+
+    steps:
+    - name: Checkout
+      uses: actions/checkout@v4.1.0
+
+    - name: Setup CI
+      id: setup
+      uses: ./.github/actions/setup-ios
+      with:
+        git-crypt-key: ${{ secrets.GIT_CRYPT_KEY }}
+
+    - name: Run unit tests
+      working-directory: './iosHyperskillApp'
+      run: bundle exec fastlane run_unit_tests install_pods:false
+      env:
+        FASTLANE_XCODEBUILD_SETTINGS_TIMEOUT: 60
+        IS_GIT_CRYPT_UNLOCKED: ${{ steps.setup.outputs.is-git-crypt-unlocked }}
+        GITHUB_USER: ${{ github.actor }}
+        GITHUB_PERSONAL_ACCESS_TOKEN: ${{ secrets.GITHUB_TOKEN }}