chore(config): migrate config renovate.json5

Author: renovate[bot]

renovate.json5

@@ -1,15 +1,12 @@
 {
-  extends: ['github>netlify/renovate-config:default'],
-  ignorePresets: [':prHourlyLimit2'],
-  semanticCommits: true,
-  masterIssue: true,
+  extends: ["github>netlify/renovate-config:default"],
+  ignorePresets: [":prHourlyLimit2"],
+  semanticCommits: "enabled",
+  dependencyDashboard: true,
   automerge: true,
   packageRules: [
     {
-      // Those cannot be upgraded to a major version until we drop support for Node 8
-      packageNames: [
-        'ava',
-      ],
+      matchPackageNames: ["ava"],
       major: {
         enabled: false,
       },