Clean up JAR compilation warning in Bio Auth Service

[ghost]

Fix this warning:

w: Runtime JAR files in the classpath should have the same version. These files were found in the classpath:
/Users/jeffk/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-jdk8/1.4.32/3302f9ec8a5c1ed220781dbd37770072549bd333/kotlin-stdlib-jdk8-1.4.32.jar (version 1.4)
/Users/jeffk/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-jdk7/1.4.32/3546900a3ebff0c43f31190baf87a9220e37b7ea/kotlin-stdlib-jdk7-1.4.32.jar (version 1.4)
/Users/jeffk/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-reflect/1.4.32/ce852b166d97f0f1991b5130c2bb02e2ef6c554e/kotlin-reflect-1.4.32.jar (version 1.4)
/Users/jeffk/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib/1.5.0/29dae2501ca094416d15af0e21470cb634780444/kotlin-stdlib-1.5.0.jar (version 1.5)
/Users/jeffk/.gradle/caches/modules-2/files-2.1/org.jetbrains.kotlin/kotlin-stdlib-common/1.5.0/4080d69efca5e39e9b4972f125e40f1607bd6460/kotlin-stdlib-common-1.5.0.jar (version 1.5)
w: Consider providing an explicit dependency on kotlin-reflect 1.5 to prevent strange errors
w: Some runtime JAR files in the classpath have an incompatible version. Consider removing them from the classpath