chore: adds renovate config (#19)

## what

* Adds a renovate configuration for auto-upgrade TF modules + aqua
packages

## why

- So our usage of TF doesn't go stale

## references

- N/A


<!-- This is an auto-generated comment: release notes by coderabbit.ai
-->
## Summary by CodeRabbit

- **New Features**
	- Introduced a new configuration for automated dependency management.
	- Set a schedule for updates and defined base branches.
	- Enabled automatic labeling and closure of the dependency dashboard.
	- Specified paths to ignore for Terraform updates.
<!-- end of auto-generated comment: release notes by coderabbit.ai -->

.github/renovate.json5

@@ -0,0 +1,15 @@
+{
+  "extends": [
+    "config:recommended",
+    "github>aquaproj/aqua-renovate-config#2.6.0"
+  ],
+  "schedule": ["before 5am on Monday"],
+  "baseBranches": ["main", "master"],
+  "labels": ["auto-upgrade"],
+  "dependencyDashboardAutoclose": true,
+  "terraform": {
+    "ignorePaths": [
+      "**/context.tf",
+    ]
+  },
+}