Import Spring Framework BOM and update core dep

Replace individual Spring artifacts in the parent POM with an import of the spring-framework-bom (type=pom, scope=import) to centralize Spring dependency management. In microsphere-java-core, change the test dependency from spring-context to spring-core so the module depends on the correct core artifact while retaining test scope.

Author: mercyblitz

microsphere-java-core/pom.xml

@@ -79,7 +79,7 @@
         <!-- Spring -->
         <dependency>
             <groupId>org.springframework</groupId>
-            <artifactId>spring-context</artifactId>
+            <artifactId>spring-core</artifactId>
             <scope>test</scope>
         </dependency>
 

microsphere-java-parent/pom.xml

@@ -36,19 +36,13 @@
                 <scope>import</scope>
             </dependency>
 
-            <!-- Spring -->
+            <!-- Spring Framework BOM -->
             <dependency>
                 <groupId>org.springframework</groupId>
-                <artifactId>spring-context</artifactId>
+                <artifactId>spring-framework-bom</artifactId>
                 <version>${spring-framework.version}</version>
-                <scope>test</scope>
-            </dependency>
-
-            <dependency>
-                <groupId>org.springframework</groupId>
-                <artifactId>spring-web</artifactId>
-                <version>${spring-framework.version}</version>
-                <scope>test</scope>
+                <type>pom</type>
+                <scope>import</scope>
             </dependency>
 
         </dependencies>