Update and rename renovate.json to .renovaterc.json5

Add ARC settings and set up to catch other versions in yaml files

.renovaterc.json5

@@ -0,0 +1,14 @@
+{
+  $schema: "https://docs.renovatebot.com/renovate-schema.json",
+  extends: ["github>UCL-ARC/.github//renovate/default-config.json", ":dependencyDashboard"],
+  customManagers: [
+    {
+      "customType": "regex",
+      "fileMatch": ["^.*\\.y.?ml$"],
+      "matchStrings": [
+        '#\\srenovate:\\sdatasource=(?<datasource>.*?) depName=(?<depName>.*?)( versioning=(?<versioning>.*?))?\\s*.*?_version:\\s*(?<currentValue>.*)\\s*'
+        ],
+      "versioningTemplate": "{{#if versioning}}{{{versioning}}}{{else}}semver{{/if}}"
+    }
+  ]
+}