Drop some unneccessary configuration

.github/dependabot.yml

@@ -1,38 +1,8 @@
 version: 2
-registries:
-  rubygems-server-gems-graphql-pro:
-    type: rubygems-server
-    url: https://gems.graphql.pro
-    username: "${{secrets.RUBYGEMS_SERVER_GEMS_GRAPHQL_PRO_USERNAME}}"
-    password: "${{secrets.RUBYGEMS_SERVER_GEMS_GRAPHQL_PRO_PASSWORD}}"
 
 updates:
 - package-ecosystem: bundler
   directory: "/"
   schedule:
     interval: daily
-    time: "08:00"
-    timezone: America/New_York
   open-pull-requests-limit: 10
-  ignore:
-  - dependency-name: actionpack
-    versions:
-    - 6.1.3
-    - 6.1.3.1
-  - dependency-name: activerecord
-    versions:
-    - 6.1.2
-    - 6.1.3
-    - 6.1.3.1
-  - dependency-name: actionview
-    versions:
-    - 6.1.2
-    - 6.1.2.1
-  - dependency-name: timecop
-    versions:
-    - 0.9.3
-  - dependency-name: database_cleaner
-    versions:
-    - 2.0.0
-  registries:
-  - rubygems-server-gems-graphql-pro