Bump junit-bom from 5.7.2 to 5.8.0 (#1427)

Author: dependabot[bot]

build.gradle

@@ -56,7 +56,7 @@ ext {
     cxfVersion = "3.4.4"
     glassfishJaxbVersion = "2.3.3"
     jerseyVersion = "2.32"
-    junitVersion = "5.7.2"
+    junitVersion = "5.8.0"
     hamcrestVersion = "2.2"
     logbackVersion = "1.2.6"
     mockitoVersion = "3.12.4"
@@ -147,7 +147,6 @@ allprojects { subproj ->
 
         testImplementation "org.junit.jupiter:junit-jupiter-api"
         testImplementation "org.junit.jupiter:junit-jupiter-params"
-        testImplementation "org.apiguardian:apiguardian-api"
         testRuntimeOnly "org.junit.jupiter:junit-jupiter-engine"
         testRuntimeOnly "org.junit.platform:junit-platform-launcher"
     }