Format matrix values in Maven build workflow

Improved readability of the maven-profile-spring-cloud matrix in the GitHub Actions workflow by splitting the list across two lines.

Author: mercyblitz

.github/workflows/maven-build.yml

@@ -20,7 +20,8 @@ jobs:
     strategy:
       matrix:
         java: [ '17' , '21' , '25' ]
-        maven-profile-spring-cloud: [ 'spring-cloud-2022' , 'spring-cloud-2023' , 'spring-cloud-2024' , 'spring-cloud-2025' ]
+        maven-profile-spring-cloud: [ 'spring-cloud-2022' , 'spring-cloud-2023' , 'spring-cloud-2024' ,
+                                      'spring-cloud-2025' ]
     steps:
       - name: Checkout Source
         uses: actions/checkout@v5