deps: update dependency org.springframework.boot:spring-boot to v3.4.3 (googleapis#1922)

Author: renovate-bot

samples/quickperf/pom.xml

@@ -79,7 +79,7 @@
     <dependency>
       <groupId>org.springframework.boot</groupId>
       <artifactId>spring-boot</artifactId>
-      <version>3.4.2</version>
+      <version>3.4.3</version>
       <scope>test</scope>
     </dependency>
     <dependency>