fix: add SLF4J providers

SLF4J: No SLF4J providers were found.
SLF4J: Defaulting to no-operation (NOP) logger implementation
SLF4J: See https://www.slf4j.org/codes.html#noProviders for further details.
SLF4J: Class path contains SLF4J bindings targeting slf4j-api versions 1.7.x or earlier.
SLF4J: Ignoring binding found at [jar:file:/home/runner/.gradle/caches/transforms-3/7adcb909ec6a171fc6a1a1c1cf301964/transformed/jetified-logback-classic-1.2.11.jar!/org/slf4j/impl/StaticLoggerBinder.class]
SLF4J: See https://www.slf4j.org/codes.html#ignoredBindings for an explanation.

app/build.gradle

@@ -153,6 +153,7 @@ dependencies {
     testImplementation "io.mockk:mockk:$mockkVersion"
     testImplementation "org.jetbrains.kotlinx:kotlinx-coroutines-test:$kotlinxCoroutineTestVersion"
     testImplementation "androidx.arch.core:core-testing:$androidXArchCoreTestVersion"
+    testImplementation 'ch.qos.logback:logback-classic:1.4.14'
     kaptTest "com.google.auto.service:auto-service:1.0-rc4"
 
     androidTestImplementation "junit:junit:$junitVersion"//tests the app logic