build(deps): bump junit.version from 5.7.0 to 5.12.1

Bumps `junit.version` from 5.7.0 to 5.12.1.

Updates `org.junit.jupiter:junit-jupiter-engine` from 5.7.0 to 5.12.1
- [Release notes](https://github.com/junit-team/junit5/releases)
- [Commits](junit-team/junit5@r5.7.0...r5.12.1)

Updates `org.junit.jupiter:junit-jupiter-params` from 5.11.4 to 5.12.1
- [Release notes](https://github.com/junit-team/junit5/releases)
- [Commits](junit-team/junit5@r5.11.4...r5.12.1)

Updates `org.junit.jupiter:junit-jupiter-migrationsupport` from 5.11.4 to 5.12.1
- [Release notes](https://github.com/junit-team/junit5/releases)
- [Commits](junit-team/junit5@r5.11.4...r5.12.1)

---
updated-dependencies:
- dependency-name: org.junit.jupiter:junit-jupiter-engine
  dependency-version: 5.12.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.junit.jupiter:junit-jupiter-params
  dependency-version: 5.12.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
- dependency-name: org.junit.jupiter:junit-jupiter-migrationsupport
  dependency-version: 5.12.1
  dependency-type: direct:production
  update-type: version-update:semver-minor
...

Signed-off-by: dependabot[bot] <[email protected]>

Author: dependabot[bot]

pom.xml

@@ -40,7 +40,7 @@
 
     <!-- Spring Boot related dependencies. Keep these in sync! -->
     <spring-boot.version>3.4.4</spring-boot.version>
-    <junit.version>5.11.4</junit.version>
+    <junit.version>5.12.1</junit.version>
     <mockito.version>5.14.2</mockito.version>
     <logback.version>1.5.18</logback.version>
     <slf4j.version>2.0.17</slf4j.version>