Remove 1.0.x branch from dependabot config

The 1.0.x branch is now in the commercial private repo so we should not open pull requests to it anymore.

.github/dependabot.yml

@@ -2,23 +2,10 @@ version: 2
 updates:
  - package-ecosystem: "github-actions"
  directory: "/"
- target-branch: "1.0.x" # oldest supported branch
+ target-branch: "1.1.x" # oldest OSS supported branch
  schedule:
  interval: "weekly"
 # Non-build dependencies; target every supported branch
- - package-ecosystem: gradle
- directory: "/"
- schedule:
- interval: daily
- target-branch: "1.0.x"
- milestone: 13
- ignore:
- # only upgrade patch versions
- - dependency-name: "*"
- update-types:
- - version-update:semver-major
- - version-update:semver-minor
- open-pull-requests-limit: 10
  - package-ecosystem: gradle
  directory: "/"
  schedule: