ci: bump golang automatically

Author: sboschman

.github/renovate.json5

@@ -8,6 +8,12 @@
   },
   enabledManagers: ["github-actions", "dockerfile", "gomod", "ocb"],
   packageRules: [
+    {
+      "matchManagers": ["gomod"],
+      "matchDepNames": ["go"],
+      "matchDepTypes": ["golang"],
+      "rangeStrategy": "bump"
+    },
     {
       matchManagers: ["dockerfile"],
       matchDepTypes: ["stage"],