Various CI/CD improvements

* Add `concurrency` for `ci-snapshot.yml` to avoid unnecessary queued builds
* Add `schedule` for `ci-snapshot.yml` to run build fresh snapshots every night
* Fix job name for `verify-staged-artifacts.yml` since we are not verifying against samples
* Remove `maven` config for Dependabot.
Looks like it does not look into sub-directories, so its config is not very convenient for our different samples

.github/workflows/ci-snapshot.yml

@@ -2,14 +2,24 @@ name: CI SNAPSHOT
 
 on:
   workflow_dispatch:
+
   push:
     branches:
       - main
       - '*.x'
 
+  schedule:
+    - cron: '0 5 * * *'
+
+concurrency:
+  group: group-snapshot-for-${{ github.ref }}
+  cancel-in-progress: true
+
 jobs:
   build-snapshot:
     uses: spring-io/spring-github-workflows/.github/workflows/spring-artifactory-gradle-snapshot.yml@v1
+    with:
+      gradleTasks: ${{ github.event_name == 'schedule' && '--rerun-tasks' || '' }}
     secrets:
       GRADLE_ENTERPRISE_CACHE_USER: ${{ secrets.GRADLE_ENTERPRISE_CACHE_USER }}
       GRADLE_ENTERPRISE_CACHE_PASSWORD: ${{ secrets.GRADLE_ENTERPRISE_CACHE_PASSWORD }}

.github/workflows/verify-staged-artifacts.yml

@@ -9,11 +9,11 @@ on:
         type: string
 
 jobs:
-  verify-staged-with-samples:
+  verify-staged-with-spring-integration:
     runs-on: ubuntu-latest
     steps:
 
-      - name: Checkout Samples Repo
+      - name: Checkout Spring Integration Repo
         uses: actions/checkout@v4
         with:
           repository: spring-projects/spring-integration