ci: remove unused property from dependabot config

This commit removes the unwanted and unused property
`commit-message` from the dependabot config.

Signed-off-by: vprashar2929 <[email protected]>

Author: vprashar2929

.github/dependabot.yml

@@ -14,8 +14,6 @@ updates:
     ignore:
       - dependency-name: k8s.io/*
         update-types: [version-update:semver-major, version-update:semver-minor]
-    commit-message:
-      include: scope
     open-pull-requests-limit: 5
     labels:
       - dependencies
@@ -29,8 +27,6 @@ updates:
       github-actions:
         patterns:
           - "*"
-    commit-message:
-      include: scope
     open-pull-requests-limit: 5
     labels:
       - dependencies