Configure Renovate (#4)

Reviewed-on: #4
Co-authored-by: renovate <renovate@noreply.localhost>
Co-committed-by: renovate <renovate@noreply.localhost>

renovate.json

@@ -0,0 +1,14 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "labels": [
+    "dependencies"
+  ],
+  "extends": [
+    "config:base",
+    ":semanticCommits",
+    ":semanticCommitTypeAll(chore)"
+  ],
+  "postUpdateOptions": [
+    "gomodTidy"
+  ]
+}