Add renovate.json (#1)

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

renovate.json

@@ -0,0 +1,25 @@
+{
+  "$schema": "https://docs.renovatebot.com/renovate-schema.json",
+  "extends": [
+    "config:base",
+    ":dependencyDashboard",
+    ":prHourlyLimit4",
+    ":semanticCommits",
+    ":prConcurrentLimit10"
+  ],
+  "packageRules": [
+    {
+      "matchDatasources": [
+        "docker"
+      ],
+      "matchUpdateTypes": [
+        "major"
+      ],
+      "enabled": true
+    }
+  ],
+  "labels": [
+    "dependencies"
+  ],
+  "separateMinorPatch": true
+}