BasicLocationKotlin module:

-changed compileSdkVersion and targetSdkVersion to 30
-updated Android Gradle plugin dependency to 4.1.0
-updated Kotlin Gradle plugin and Kotlin JDK dependencies to 1.4.10
-reorganised dependencies
-updated Jetpack AppCompat dependency to 1.2.0
-updated Jetpack MaterialComponents dependency to 1.2.1
-replaced Kotlin JDK7 dependency with Kotlin JDK8
-updated PlayServices Location dependency to 17.1.0
-enabled ViewBinding support in module's settings

Author: MadRatSRP

BasicLocationKotlin/app/build.gradle

@@ -5,7 +5,6 @@ apply plugin: 'kotlin-android-extensions'
 android {
     compileSdkVersion parent.ext.compileSdkVersion
 
-
     defaultConfig {
         applicationId "com.google.android.gms.location.sample.basiclocationsample"
         minSdkVersion parent.ext.minSdkVersion
@@ -19,11 +18,35 @@ android {
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
     }
+
+    buildFeatures {
+        viewBinding true
+    }
+}
+
+ext {
+    // Android Jetpack
+    // AppCompat
+    appCompatVersion = "1.2.0"
+    // MaterialComponents
+    materialComponentsVersion = "1.2.1"
+
+    // Google PlayServices
+    // Location
+    locationVersion = "17.1.0"
 }
 
 dependencies {
-    implementation 'androidx.appcompat:appcompat:1.1.0'
-    implementation 'com.google.android.material:material:1.0.0'
-    implementation "com.google.android.gms:play-services-location:17.0.0"
-    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk7:1.3.50"
+    // Android Jetpack
+    // AppCompat
+    implementation "androidx.appcompat:appcompat:$appCompatVersion"
+    // MaterialComponents
+    implementation "com.google.android.material:material:$materialComponentsVersion"
+
+    // Google PlayServices
+    // Location
+    implementation "com.google.android.gms:play-services-location:$locationVersion"
+
+    // Kotlin
+    implementation "org.jetbrains.kotlin:kotlin-stdlib-jdk8:$kotlinVersion"
 }

BasicLocationKotlin/build.gradle

@@ -1,16 +1,25 @@
 buildscript {
     ext {
-        compileSdkVersion = 28
+        compileSdkVersion = 30
         minSdkVersion = 16
-        targetSdkVersion = 28
+        targetSdkVersion = 30
+
+        // Android Gradle plugin
+        androidGradleVersion = "4.1.0"
+
+        // Kotlin Gradle plugin | Kotlin JDK
+        kotlinVersion = "1.4.10"
     }
     repositories {
         google()
         jcenter()
     }
     dependencies {
-        classpath "com.android.tools.build:gradle:3.5.1"
-        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:1.3.50"
+        // Android Gradle plugin
+        classpath "com.android.tools.build:gradle:$androidGradleVersion"
+
+        // Kotlin Gradle plugin
+        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlinVersion"
     }
 }