chore: set renovate to run monthly (#666)

* chore: set renovate to run monthly

* chore: apply `renovate-config-validator` recommendations

* chore: add renovate validator

Author: afonsojramos

.github/workflows/pr-title-validator.yml renamed to .github/workflows/validator.yml

@@ -1,4 +1,4 @@
-name: PR Title Validator
+name: Validators
 
 on:
   pull_request:
@@ -29,3 +29,24 @@ jobs:
             if (!match.groups.subject) {
               core.setFailed('Missing subject in PR title');
             }
+
+  renovate:
+    name: Validate Renovate config
+    runs-on: ubuntu-latest
+    steps:
+      - uses: actions/checkout@v4
+
+      - uses: actions/setup-node@v3
+        with:
+          node-version-file: .nvmrc
+
+      - uses: pnpm/action-setup@v2
+        name: Install pnpm
+        id: pnpm-install
+        with:
+          run_install: false
+
+      - run: pnpm install --global renovate
+
+      - name: Validate Renovate config
+        run: renovate-config-validator

renovate.json

@@ -1,7 +1,8 @@
 {
   "$schema": "https://docs.renovatebot.com/renovate-schema.json",
-  "extends": ["config:base"],
+  "extends": ["config:recommended"],
   "labels": ["dependency"],
   "prConcurrentLimit": 5,
-  "rangeStrategy": "pin"
+  "rangeStrategy": "pin",
+  "schedule": ["monthly"]
 }