chore: use single rule only

It's not possible to have two rules where only the version-strategy
differs. So keep the default one.

Author: vmx

.github/dependabot.yml

@@ -1,10 +1,7 @@
 version: 2
 updates:
-  # `version-strategy` is not supported on a group level, hence we need two
-  # separate rules for breaking and non-breaking changes.
-  # Non breaking changes will be grouped in a single PR and only their
-  # lock-files will be updated. This way we can see on the CI if any minor
-  # update accidentally broke our code.
+  # Non breaking changes will be grouped in a single PR. This way we can see
+  # on the CI if any minor update accidentally broke our code.
   # Breaking changes will create individual PRs.
   - package-ecosystem: "cargo"
     directory: "/"
@@ -15,18 +12,6 @@ updates:
         patterns:
           - "*"
         update-types: ["minor", "patch"]
-    versioning-strategy: lockfile-only
-    ignore:
-      - dependency-name: "*"
-        update-types: ["version-update:semver-major"]
-  - package-ecosystem: "cargo"
-    directory: "/"
-    schedule:
-      interval: "daily"
-    versioning-strategy: auto
-    ignore:
-      - dependency-name: "*"
-        update-types: ["version-update:semver-patch", "version-update:semver-minor"]
 
   - package-ecosystem: "github-actions"
     directory: "/"