chore(deps): update dependency org.springframework.boot:spring-boot-gradle-plugin to v3.5.8 (#1785)

This PR contains the following updates:

| Package | Change | Age | Confidence |
|---|---|---|---|
|
[org.springframework.boot:spring-boot-gradle-plugin](https://spring.io/projects/spring-boot)
([source](https://redirect.github.com/spring-projects/spring-boot)) |
`3.5.7` -> `3.5.8` |
[![age](https://developer.mend.io/api/mc/badges/age/maven/org.springframework.boot:spring-boot-gradle-plugin/3.5.8?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|
[![confidence](https://developer.mend.io/api/mc/badges/confidence/maven/org.springframework.boot:spring-boot-gradle-plugin/3.5.7/3.5.8?slim=true)](https://docs.renovatebot.com/merge-confidence/)
|

---

### Release Notes

<details>
<summary>spring-projects/spring-boot
(org.springframework.boot:spring-boot-gradle-plugin)</summary>

###
[`v3.5.8`](https://redirect.github.com/spring-projects/spring-boot/compare/v3.5.7...v3.5.8)

</details>

---

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---

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buildSrc/build.gradle.kts

@@ -15,7 +15,7 @@ dependencies {
     implementation("io.github.gradle-nexus:publish-plugin:2.0.0")
     implementation("org.openapitools:openapi-generator-gradle-plugin:7.17.0")
     implementation("com.github.spotbugs.snom:spotbugs-gradle-plugin:6.4.5")
-    implementation("org.springframework.boot:spring-boot-gradle-plugin:3.5.7")
+    implementation("org.springframework.boot:spring-boot-gradle-plugin:3.5.8")
 
     // workaround to use libs in a precompiled script plugin.
     // https://github.com/gradle/gradle/issues/15383