catch exceprion in playheads() and postPlayheads() & update agp

* fix a crash, if there is no internet connection while in playback (closes #60)
* agp 7.2.0 -> 7.2.1

app/src/main/java/org/mosad/teapod/parser/crunchyroll/Crunchyroll.kt

@@ -550,8 +550,11 @@ object Crunchyroll {
 
         return try {
             requestGet(playheadsEndpoint, parameters)
-        }catch (ex: SerializationException) {
-            Log.e(TAG, "SerializationException in upNextSeries().", ex)
+        } catch (ex: SerializationException) {
+            Log.e(TAG, "SerializationException in playheads().", ex)
+            emptyMap()
+        } catch (ex: Throwable) {
+            Log.e(TAG, "Exception in playheads().", ex.cause)
             emptyMap()
         }
     }
@@ -571,7 +574,11 @@ object Crunchyroll {
             put("playhead", playhead)
         }
 
-        requestPost(playheadsEndpoint, parameters, json)
+        try {
+            requestPost(playheadsEndpoint, parameters, json)
+        } catch (ex: Throwable) {
+            Log.e(TAG, "Exception in postPlayheads()", ex.cause)
+        }
     }
 
     /**

build.gradle

@@ -8,7 +8,7 @@ buildscript {
         mavenCentral()
     }
     dependencies {
-        classpath 'com.android.tools.build:gradle:7.2.0'
+        classpath 'com.android.tools.build:gradle:7.2.1'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
 
         // NOTE: Do not place your application dependencies here; they belong