Disable 4.2.x branch in dependabot configuration

Signed-off-by: Roy Clarkson <[email protected]>

Author: royclarkson

.github/dependabot.yml

@@ -87,30 +87,3 @@ updates:
         update-types:
           - "version-update:semver-major"
           - "version-update:semver-minor"
-
-  - package-ecosystem: "gradle"
-    directory: "/"
-    schedule:
-      interval: "daily"
-    labels:
-      - "dependencies"
-    commit-message:
-      prefix: "(v4.2.x)"
-    target-branch: "4.2.x"
-    ignore:
-      - dependency-name: "org.springframework.boot"
-        update-types:
-          - "version-update:semver-major"
-          - "version-update:semver-minor"
-      - dependency-name: "org.springframework.boot:spring-boot-dependencies"
-        update-types:
-          - "version-update:semver-major"
-          - "version-update:semver-minor"
-      - dependency-name: "org.springframework.cloud.contract"
-        update-types:
-          -  "version-update:semver-major"
-          -  "version-update:semver-minor"
-      - dependency-name: "org.springframework.cloud:spring-cloud-contract-dependencies"
-        update-types:
-          - "version-update:semver-major"
-          - "version-update:semver-minor"