ci(renovate): add workflow and configuration for dependency updates

- Introduces a Renovate GitHub Action to automate dependency updates.
- Configures daily runs at 5 AM UTC and allows manual execution.
- Defines settings for managing NuGet and GitHub Actions dependencies, including auto-merge capabilities and a dependency dashboard.
- Establishes group rules for grouping dependencies and setting management limits.

Author: winromulus

.github/workflows/renovate.yaml

@@ -0,0 +1,18 @@
+name: Renovate
+
+on:
+  schedule:
+    - cron: '0 5 * * *' # daily at 5am UTC
+  workflow_dispatch:
+
+jobs:
+  renovate:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout repo
+        uses: actions/checkout@v4
+
+      - name: Run Renovate
+        uses: renovatebot/[email protected]
+        with:
+          token: ${{ secrets.ES_GITHUB_PAT }}

renovate.json

@@ -0,0 +1,26 @@
+{
+    "extends": ["config:recommended"],
+    "dependencyDashboard": true,
+    "labels": ["area-dependencies"],
+    "enabledManagers": ["nuget", "github-actions"],
+    "packageRules": [
+      {
+        "matchManagers": ["nuget"],
+        "matchPaths": ["src/**"],
+        "groupName": "all-dependencies",
+        "automerge": true,
+        "labels": ["area-dependencies"]
+      },
+      {
+        "matchManagers": ["github-actions"],
+        "matchPaths": [".github/workflows/**"],
+        "groupName": "all-dependencies",
+        "automerge": true,
+        "labels": ["area-dependencies"]
+      }
+    ],
+    "automergeType": "pr",
+    "prHourlyLimit": 15,
+    "prConcurrentLimit": 15
+  }
+