chore: enabling renovate bot on develop (#3192)

* Renovate setup files

* Corrected cron and comment

* Added renovate configuration targeting both develop branches

* Update renovate.json5

---------

Co-authored-by: Noel Stephens <noel.stephens@unity3d.com>

Author: michalChrobot

.github/renovate.json5

@@ -0,0 +1,37 @@
+{
+  "baseBranches": ["develop", "develop-2.0.0"],
+  
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "local>unity/renovate-config"
+  ],
+  "prConcurrentLimit": 100,
+  // Ignore commits produced by github actions workflows
+  "gitIgnoredAuthors": ["githubaction@githubaction.com"],
+  "ignorePaths": [
+    "**/node_modules/**",
+    // Don't renovate files in special folders using ~ as suffix
+    "**/*~/**"
+  ],
+  "packageRules": [
+    // Run unity-upm-project and unity-upm-package only on weekends to reduce PR noise
+    // Also ensure dependencies won't be downgraded when they don't exist in the public repositories
+    {
+      "matchManagers": [
+        "unity-upm-project",
+        "unity-upm-package"
+      ],
+      "enabled": "true",
+      "schedule": [
+        "every weekend"
+      ],
+      "rollbackPrs": false
+    },
+
+    // Enable automerge for Bokken image updates
+    {
+      "matchDatasources": ["unity-bokken"],
+      "automerge": false,
+    },
+  ],
+}

.github/workflows/renovate-validation.yml

@@ -0,0 +1,38 @@
+# This workflow is for validating the Renovate configuration and docker image
+# updates for it.
+name: Renovate Validation
+on:
+  workflow_dispatch:
+    inputs:
+      log-level:
+        type: choice
+        description: Select log level for Renovate
+        options:
+          - trace
+          - debug
+          - info
+          - warn
+          - error
+        default: info
+        required: false
+  pull_request:
+    paths:
+      # we trigger validation on any changes to the renovate workflow files
+      - .github/workflows/renovate*.yml
+      # as well as for any possible location for the renovate config file
+      - .github/renovate.json?
+
+
+jobs:
+  renovate-validation:
+    # The reusable workflow will be updated by renovate if there's a new version
+    uses: Unity-Technologies/renovate-workflows/.github/workflows/run.yml@v5.0.0
+    with:
+      # This is the image that contains our custom renovate and will be auto
+      # updated by Renovate itself.
+      image: europe-docker.pkg.dev/unity-cds-services-prd/ds-docker/renovate:10.1.3@sha256:fdeed7bb524bd67611eb91ee1a5e990c8c73ed62c84a0cd5ef66c87eb5fd0d70
+      dry-run: full
+      log-level: ${{ github.event.inputs.log-level }}
+    secrets:
+      renovate-auth-secret: ${{ secrets.RENOVATE_AUTH_SECRET }}
+      github-com-token: ${{ secrets.GH_COM_TOKEN }}

.github/workflows/renovate.yml

@@ -0,0 +1,33 @@
+# This workflow runs Renovate against the current repo and will create PRs with outdated dependencies.
+name: Renovate
+
+on:
+  workflow_dispatch:
+    inputs:
+      log-level:
+        type: choice
+        description: Select log level for Renovate
+        options:
+          - trace
+          - debug
+          - info
+          - warn
+          - error
+        default: info
+        required: false
+  schedule:
+    # Every 6 hours at the 6th minute.
+    - cron: '06 */6 * * *'
+
+jobs:
+  renovate:
+    # The reusable workflow will be updated by renovate if there's a new version
+    uses: Unity-Technologies/renovate-workflows/.github/workflows/run.yml@v5.0.0
+    with:
+      # This is the image that contains our custom renovate and will be auto
+      # updated by Renovate itself.
+      image: europe-docker.pkg.dev/unity-cds-services-prd/ds-docker/renovate:10.1.3@sha256:fdeed7bb524bd67611eb91ee1a5e990c8c73ed62c84a0cd5ef66c87eb5fd0d70
+      log-level: ${{ github.event.inputs.log-level }}
+    secrets:
+      renovate-auth-secret: ${{ secrets.RENOVATE_AUTH_SECRET }}
+      github-com-token: ${{ secrets.GH_COM_TOKEN }}