chore: fix dependency convergence: javassist (#19607)

* chore: fix dependency convergence: javassist

* remove exclusion

* Revert "remove exclusion"

This reverts commit 475367e.

vaadin-spring/pom.xml

@@ -173,9 +173,18 @@
             <groupId>org.reflections</groupId>
             <artifactId>reflections</artifactId>
             <version>0.10.2</version>
+            <exclusions>
+                <exclusion>
+                    <groupId>org.javassist</groupId>
+                    <artifactId>javassist</artifactId>
+                </exclusion>
+            </exclusions>
+        </dependency>
+        <dependency>
+            <groupId>org.javassist</groupId>
+            <artifactId>javassist</artifactId>
+            <version>3.30.2-GA</version>
         </dependency>
-
-
     </dependencies>
 
     <dependencyManagement>