Renovate: Group all Quarkus dependencies (#1206)

Quarkus-platform releases happen some time after the "actual" Quarkus release, which causes "broken" CI for Renovate PRs against for example the Quarkus Gradle plugin.

This change groups all Quarkus dependencies together to consistently bump all Quarkus-platform dependencies at once.

Author: snazy

.github/renovate.json5

@@ -65,6 +65,18 @@
       extends: ["schedule:weekly"],
     },
 
+    // Quarkus platform + plugin together
+    {
+      groupName: "Quarkus Platform and Group",
+      matchManagers: ["gradle"],
+      matchPackageNames: [
+        "io.quarkus.platform:quarkus-bom",
+        "io.quarkus.platform:quarkus-amazon-services-bom",
+        "io.quarkus.platform:quarkus-google-cloud-services-bom",
+        "io.quarkus:io.quarkus.gradle.plugin",
+      ],
+    },
+
     // Turn off major & minor version updates on version-branches
     {
       matchBaseBranches: ["/^release/.*/"],