deps: update dependency org.springframework.boot:spring-boot-starter-…

…parent to v3.4.0 (#2574)

benchmarks/tpcc/pom.xml

@@ -5,7 +5,7 @@
   <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
-    <version>3.3.5</version>
+    <version>3.4.0</version>
     <relativePath/> <!-- lookup parent from repository -->
   </parent>
   <groupId>com.google.cloud.spanner</groupId>