Use proper JSON5

Author: kevincianfarini

.github/renovate.json5

@@ -1,9 +1,9 @@
 {
-  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
-  "extends": [
-    "config:recommended"
+  $schema: 'https://docs.renovatebot.com/renovate-schema.json',
+  extends: [
+    'config:recommended',
   ],
-  "reviewers": ["kevincianfarini"],
+  reviewers: ["kevincianfarini"],
   ignorePresets: [
     // Ensure we get the latest version and are not pinned to old versions.
     'workarounds:javaLTSVersions',
@@ -23,5 +23,5 @@
       // Only write the major version.
       extractVersionTemplate: '^(?<version>\\d+)',
     },
-  ]
-}
+  ],
+}