fix sample so app works with latest API

NearbyConnectionsRockPaperScissors/app/build.gradle

@@ -1,11 +1,12 @@
 apply plugin: 'com.android.application'
 
 android {
-    compileSdkVersion 28
+    compileSdkVersion 30
+    buildToolsVersion "30.0.3"
     defaultConfig {
         applicationId "com.google.location.nearby.apps.rockpaperscissors"
         minSdkVersion 23
-        targetSdkVersion 28
+        targetSdkVersion 30
         versionCode 1
         versionName "1.0"
     }
@@ -15,9 +16,13 @@ android {
             proguardFiles getDefaultProguardFile('proguard-android.txt'), 'proguard-rules.pro'
         }
     }
+
+    buildFeatures {
+        viewBinding true
+    }
 }
 
 dependencies {
-    implementation 'androidx.appcompat:appcompat:1.0.0'
-    implementation 'com.google.android.gms:play-services-nearby:15.0.1'
+    implementation 'androidx.appcompat:appcompat:1.3.0'
+    implementation 'com.google.android.gms:play-services-nearby:18.0.0'
 }

NearbyConnectionsRockPaperScissors/app/src/main/AndroidManifest.xml

@@ -7,17 +7,16 @@
     <uses-permission android:name="android.permission.BLUETOOTH_ADMIN"/>
     <uses-permission android:name="android.permission.ACCESS_WIFI_STATE"/>
     <uses-permission android:name="android.permission.CHANGE_WIFI_STATE"/>
-    <uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
+    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
 
     <application
-        android:allowBackup="true"
+        android:allowBackup="false"
         android:icon="@mipmap/ic_launcher"
         android:label="@string/app_name"
         android:supportsRtl="true"
         android:theme="@style/AppTheme">
         <activity
-            android:name=".MainActivity"
-            android:screenOrientation="portrait">
+            android:name=".MainActivity">
             <intent-filter>
                 <action android:name="android.intent.action.MAIN"/>
                 <category android:name="android.intent.category.LAUNCHER"/>