[build/testing] Add jupiter-api back to testing

mirai-core-api/build.gradle.kts

@@ -57,6 +57,7 @@ kotlin {
             dependencies {
                 runtimeOnly(`log4j-core`)
                 implementation(`kotlinx-coroutines-test`)
+                api(`junit-jupiter-api`)
             }
         }
 

mirai-core-utils/build.gradle.kts

@@ -46,6 +46,7 @@ kotlin {
             dependencies {
                 api(yamlkt)
                 implementation(`kotlinx-coroutines-test`)
+                api(`junit-jupiter-api`)
             }
         }
 

mirai-core/build.gradle.kts

@@ -64,6 +64,7 @@ kotlin {
                 implementation(kotlin("script-runtime"))
                 implementation(`kotlinx-coroutines-test`)
                 api(yamlkt)
+                api(`junit-jupiter-api`)
             }
         }