Bump junit-bom from 5.4.2 to 5.5.0 (#128)

Bumps [junit-bom](https://github.com/junit-team/junit5) from 5.4.2 to 5.5.0.
- [Release notes](https://github.com/junit-team/junit5/releases)
- [Commits](junit-team/junit5@r5.4.2...r5.5.0)

Signed-off-by: dependabot-preview[bot] <support@dependabot.com>

build.gradle

@@ -53,7 +53,7 @@ configure(subprojects.findAll { !it.name.startsWith("examples/") }) {
         overriddenByDependencies = false
 
         imports {
-            mavenBom 'org.junit:junit-bom:5.4.2'
+            mavenBom 'org.junit:junit-bom:5.5.0'
             mavenBom org.springframework.boot.gradle.plugin.SpringBootPlugin.BOM_COORDINATES
             mavenBom 'org.testcontainers:testcontainers-bom:1.11.3'
         }