chore(config): migrate config renovate.json5 (#123)

Co-authored-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

Author: renovate[bot]

renovate.json5

@@ -1,12 +1,16 @@
 {
-  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
-  "extends": [
-    "config:recommended"
+  $schema: 'https://docs.renovatebot.com/renovate-schema.json',
+  extends: [
+    'config:recommended',
   ],
-  "kubernetes": {
-    "fileMatch": ["clusters/.+\\.yaml$"],
+  kubernetes: {
+    managerFilePatterns: [
+      '/clusters/.+\\.yaml$/',
+    ],
+  },
+  flux: {
+    managerFilePatterns: [
+      '/clusters/.+\\.yaml$/',
+    ],
   },
-  "flux": {
-    "fileMatch": ["clusters/.+\\.yaml$"],
-  }
 }