What is "We’ve detected that your app is using an old version of the Google Play developer API" warning in Google Developer Console?

We do not use any Google Play Developer API explicitly. Some how, we receive the following warning

I'm puzzling, as I do not use any Google Play Developer API explicitly.

Is this related to https://developer.android.com/google/play/billing/billing_library_releases_notes ?

We are currently using Google Play Billing Library 1.2.2 Release (2019-03-07)

We don't plan to migrate Google Play Billing Library 2.0.1 Release (2019-06-06) as the amount of extra work required without any gain.

Purchases must be acknowledged within three days

But, that is just my wild guess, that Google Play Billing library might be related to Google Play Developer API. They might/ might not be related to each others.

Any one have idea, what does it mean by "We’ve detected that your app is using an old version of the Google Play developer API" ?

The following is the full set of our dependencies. Any idea what causes this warning?

dependencies {
    implementation fileTree(dir: 'libs', include: ['*.jar'])


    implementation 'com.android.billingclient:billing:1.2.2'


    implementation 'androidx.multidex:multidex:2.0.1'


    def lifecycle_version = '2.0.0-beta01'
    // ViewModel and LiveData
    implementation "androidx.lifecycle:lifecycle-extensions:$lifecycle_version"


    // alternately - if using Java8, use the following instead of compiler
    implementation "androidx.lifecycle:lifecycle-common-java8:$lifecycle_version"


    def room_version = '2.1.0'
    implementation "androidx.room:room-runtime:$room_version"
    annotationProcessor "androidx.room:room-compiler:$room_version"

    def work_version = "2.1.0"
    implementation "androidx.work:work-runtime:$work_version"

    // https://github.com/yccheok/SmoothProgressBar
    implementation 'com.github.castorflex.smoothprogressbar:library:1.1.0'

    // For Google Drive REST API - https://github.com/gsuitedevs/android-samples/blob/master/drive/deprecation/app/build.gradle
    implementation('com.google.http-client:google-http-client-gson:1.26.0') {
        exclude group: 'org.apache.httpcomponents'
    }
    implementation('com.google.api-client:google-api-client-android:1.26.0') {
        exclude group: 'org.apache.httpcomponents'
    }
    implementation('com.google.apis:google-api-services-drive:v3-rev136-1.25.0') {
        exclude group: 'org.apache.httpcomponents'
    }

    implementation 'com.google.firebase:firebase-messaging:19.0.1'

    implementation 'com.google.android.gms:play-services-auth:17.0.0'

    implementation 'androidx.appcompat:appcompat:1.1.0-beta01'
    implementation 'androidx.preference:preference:1.1.0-beta01'
    implementation 'com.google.android.material:material:1.1.0-alpha07'

    implementation 'androidx.exifinterface:exifinterface:1.0.0'
    implementation 'androidx.gridlayout:gridlayout:1.0.0'
    implementation 'androidx.constraintlayout:constraintlayout:1.1.3'
    implementation 'com.google.code.gson:gson:2.8.5'

    implementation 'com.github.yccheok:AndroidDraw:0.18'
    implementation 'com.github.yccheok:SectionedRecyclerViewAdapter:0.4'
    implementation 'com.github.yccheok:CalendarView:1.10'

    implementation 'com.andrognito.patternlockview:patternlockview:1.0.0'

    implementation 'com.github.bumptech.glide:glide:4.7.1'
    annotationProcessor 'com.github.bumptech.glide:compiler:4.7.1'

    implementation 'com.github.yccheok:PhotoView:0.1'

    implementation 'com.github.yccheok:Matisse:1.6'

    implementation 'com.jakewharton.threetenabp:threetenabp:1.1.1'

    // https://github.com/romandanylyk/PageIndicatorView
    implementation 'com.romandanylyk:pageindicatorview:1.0.2@aar'

    implementation 'me.zhanghai.android.materialratingbar:library:1.3.2'

    testImplementation 'junit:junit:4.12'

    testImplementation "org.robolectric:robolectric:4.2.1"
    testImplementation 'org.mockito:mockito-core:2.23.0'
    testImplementation 'org.powermock:powermock-core:2.0.0-RC.4'
    testImplementation 'org.powermock:powermock-module-junit4:2.0.0-RC.4'
    testImplementation 'org.powermock:powermock-api-mockito2:2.0.0-RC.4'

    androidTestImplementation 'androidx.test:runner:1.3.0-alpha01'
    androidTestImplementation 'androidx.test.espresso:espresso-core:3.3.0-alpha01'
}

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