Upgrade JVM source/target compatibility to 11

build-logic/convention/src/main/kotlin/com/google/samples/apps/nowinandroid/KotlinAndroid.kt

@@ -40,8 +40,8 @@ internal fun Project.configureKotlinAndroid(
         }
 
         compileOptions {
-            sourceCompatibility = JavaVersion.VERSION_1_8
+            sourceCompatibility = JavaVersion.VERSION_11
-            targetCompatibility = JavaVersion.VERSION_1_8
+            targetCompatibility = JavaVersion.VERSION_11
             isCoreLibraryDesugaringEnabled = true
         }
 
@@ -59,8 +59,8 @@ internal fun Project.configureKotlinAndroid(
                 "-opt-in=kotlin.Experimental",
             )
 
-            // Set JVM target to 1.8
+            // Set JVM target to 11
-            jvmTarget = JavaVersion.VERSION_1_8.toString()
+            jvmTarget = JavaVersion.VERSION_11.toString()
         }
     }