deps: update dependency org.springframework.boot:spring-boot-starter-parent to v3.4.3 (#1924)

This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [org.springframework.boot:spring-boot-starter-parent](https://spring.io/projects/spring-boot) ([source](https://redirect.github.com/spring-projects/spring-boot)) | `3.4.2` -> `3.4.3` | [![age](https://developer.mend.io/api/mc/badges/age/maven/org.springframework.boot:spring-boot-starter-parent/3.4.3?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://developer.mend.io/api/mc/badges/adoption/maven/org.springframework.boot:spring-boot-starter-parent/3.4.3?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://developer.mend.io/api/mc/badges/compatibility/maven/org.springframework.boot:spring-boot-starter-parent/3.4.2/3.4.3?slim=true)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/org.springframework.boot:spring-boot-starter-parent/3.4.2/3.4.3?slim=true)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>spring-projects/spring-boot (org.springframework.boot:spring-boot-starter-parent)</summary>

### [`v3.4.3`](https://redirect.github.com/spring-projects/spring-boot/compare/v3.4.2...v3.4.3)

[Compare Source](https://redirect.github.com/spring-projects/spring-boot/compare/v3.4.2...v3.4.3)

</details>

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Author: renovate-bot

samples/spring-data-mybatis/pom.xml

@@ -13,7 +13,7 @@
   <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
-    <version>3.4.2</version>
+    <version>3.4.3</version>
     <relativePath/>
   </parent>
   <properties>