Use Gradle init script for Artifactory in verify-staged-artifacts

The JFrog CLI does not resolve artifacts properly: only provided `--repo-resolve` is in use

**Auto-cherry-pick to `3.1.x` & `3.0.x`**

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

@@ -8,6 +8,13 @@ on:
         required: true
         type: string
 
+env:
+  GRADLE_ENTERPRISE_CACHE_USERNAME: ${{ secrets.GRADLE_ENTERPRISE_CACHE_USER }}
+  GRADLE_ENTERPRISE_CACHE_PASSWORD: ${{ secrets.GRADLE_ENTERPRISE_CACHE_PASSWORD }}
+  GRADLE_ENTERPRISE_ACCESS_KEY: ${{ secrets.GRADLE_ENTERPRISE_SECRET_ACCESS_KEY }}
+  ARTIFACTORY_USERNAME: ${{ secrets.ARTIFACTORY_USERNAME }}
+  ARTIFACTORY_PASSWORD: ${{ secrets.ARTIFACTORY_PASSWORD }}
+
 jobs:
   verify-staged-with-spring-integration:
     runs-on: ubuntu-latest
@@ -19,24 +26,27 @@ jobs:
           repository: spring-projects/spring-integration
           show-progress: false
 
-      - name: Set up JDK
-        uses: actions/setup-java@v4
-        with:
-          distribution: temurin
-          java-version: 17
-          cache: 'gradle'
+      - name: Set up Gradle
+        uses: spring-io/spring-gradle-build-action@v2
 
-      - uses: jfrog/setup-jfrog-cli@v4
-        env:
-          JF_ENV_SPRING: ${{ secrets.JF_ARTIFACTORY_SPRING }}
-
-      - name: Configure JFrog Cli
-        run: jf gradlec --repo-resolve libs-release-staging
-
-      - name: Verify Spring Integration Kafka against staged release
+      - name: Prepare Spring Integration project against Staging
         run: |
-          sed -i "1,/springKafkaVersion.*/s/springKafkaVersion.*/springKafkaVersion='${{ inputs.releaseVersion }}'/" build.gradle
-          jf gradle :spring-integration-kafka:check
+          printf "allprojects {
+                  repositories {
+                    maven { 
+                      url 'https://repo.spring.io/libs-staging-local'
+                      credentials {
+                        username = '$ARTIFACTORY_USERNAME'
+                        password = '$ARTIFACTORY_PASSWORD'
+                      }
+                    }
+                  }
+                }" > staging-repo-init.gradle
+          
+          sed -i "1,/springKafkaVersion.*/s/springKafkaVersion.*/springKafkaVersion='${{ inputs.releaseVersion }}'/" build.gradle  
+
+      - name: Verify Spring Integration Kafka module against staged release
+        run: gradle :spring-integration-kafka:check --init-script staging-repo-init.gradle
 
       - name: Capture Test Results
         if: failure()