Split cargo group into cargo-minor and cargo-patch (#2719)

Author: cruessler

.github/dependabot.yml

@@ -6,5 +6,11 @@ updates:
     interval: daily
   open-pull-requests-limit: 10
   groups:
-    cargo:
+    cargo-minor:
       patterns: ["*"]
+      update-types:
+        - 'minor'
+    cargo-patch:
+      patterns: ["*"]
+      update-types:
+        - 'patch'