Add Renovate configuration

- Include regex manager for Chainguard MinIO container digest

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>
Co-Authored-By: Claude Sonnet 4.6 <noreply@anthropic.com>

Author: 3 people

.github/renovate.json

@@ -0,0 +1,24 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "config:recommended"
+  ],
+  "pinDigests": true,
+  "prConcurrentLimit": 0,
+  "branchConcurrentLimit": 0,
+  "prHourlyLimit": 0,
+  "customManagers": [
+    {
+      "customType": "regex",
+      "managerFilePatterns": [
+        "trino-aws-proxy/src/test/java/io/trino/aws/proxy/server/testing/containers/S3Container.java"
+      ],
+      "matchStrings": [
+        "cgr\\.dev/chainguard/minio@(?<currentDigest>sha256:[a-f0-9]+)"
+      ],
+      "depNameTemplate": "cgr.dev/chainguard/minio",
+      "datasourceTemplate": "docker",
+      "currentValueTemplate": "latest"
+    }
+  ]
+}