Upgrade to GitHub-native Dependabot (#68)

Co-authored-by: dependabot-preview[bot] <27856297+dependabot-preview[bot]@users.noreply.github.com>

.github/dependabot.yml

@@ -0,0 +1,31 @@
+version: 2
+registries:
+  maven-repository-maven-pkg-github-com-continuous-x-jenkins-cx:
+    type: maven-repository
+    url: https://maven.pkg.github.com/Continuous-X/jenkins-cx/
+    username: [email protected]
+    password: "${{secrets.MAVEN_REPOSITORY_MAVEN_PKG_GITHUB_COM_CONTINUOUS_X_JENKINS_CX_PASSWORD}}"
+
+updates:
+- package-ecosystem: maven
+  directory: "/"
+  schedule:
+    interval: daily
+  open-pull-requests-limit: 99
+  target-branch: master
+  commit-message:
+    prefix: fix
+    prefix-development: chore
+    include: scope
+  registries:
+  - maven-repository-maven-pkg-github-com-continuous-x-jenkins-cx
+- package-ecosystem: docker
+  directory: "/"
+  schedule:
+    interval: daily
+  open-pull-requests-limit: 99
+  target-branch: master
+  commit-message:
+    prefix: fix
+    prefix-development: chore
+    include: scope