feat: migrate from Dependabot to Renovate for better Terraform support (#185)

* feat: migrate from Dependabot to Renovate for better Terraform support

* fix: add Go modules and GitHub Actions dependency management to Renovate

This addresses critical security gaps identified in the Dependabot migration:
- Adds Go module dependency management for test dependencies
- Adds GitHub Actions security updates coverage
- Schedules both for Monday mornings to minimize disruption

Co-authored-by: Luis M. Gallardo D. <lgallard@users.noreply.github.com>

* feat: add Terraform provider management for examples directories

This addresses the security gap where examples directories weren''t receiving
Terraform provider updates. The new configuration specifically targets
examples/** files for provider updates on Monday mornings while maintaining
stability by keeping major provider updates disabled for the main module.

Co-authored-by: Luis M. Gallardo D. <lgallard@users.noreply.github.com>

---------

Co-authored-by: claude[bot] <209825114+claude[bot]@users.noreply.github.com>
Co-authored-by: Luis M. Gallardo D. <lgallard@users.noreply.github.com>

Author: lgallard

.github/dependabot.yml

@@ -0,0 +1,29 @@
+{
+  "extends": ["config:base"],
+  "terraform": {
+    "ignoreDeps": ["hashicorp/terraform"]
+  },
+  "packageRules": [
+    {
+      "datasources": ["terraform-provider"],
+      "updateTypes": ["major"],
+      "enabled": false
+    },
+    {
+      "datasources": ["terraform-provider"],
+      "matchFileNames": ["examples/**"],
+      "enabled": true,
+      "schedule": ["before 9am on monday"]
+    },
+    {
+      "datasources": ["go"],
+      "enabled": true,
+      "schedule": ["before 9am on monday"]
+    },
+    {
+      "datasources": ["github-actions"],
+      "enabled": true,
+      "schedule": ["before 9am on monday"]
+    }
+  ]
+}