update gradle version

Author: Creeper19472

src/serious_python/bin/package_command.dart

@@ -487,7 +487,7 @@ class PackageCommand extends Command {
     for (var entity in directory.listSync()) {
       if (globs.any((g) => g.matches(entity.path.replaceAll("\\", "/"))) &&
           await entity.exists()) {
-        try {verbose("Deleting ${entity.path}");} catch (e) {}
+        verbose("Deleting ${entity.path}");
         await entity.delete(recursive: true);
       } else if (entity is Directory) {
         if (await cleanupDirRecursive(entity, globs)) {

src/serious_python/example/flask_example/android/build.gradle

@@ -6,7 +6,7 @@ buildscript {
     }
 
     dependencies {
-        classpath 'com.android.tools.build:gradle:7.3.0'
+        classpath 'com.android.tools.build:gradle:9.1.0'
         classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
     }
 }

src/serious_python_android/android/build.gradle

@@ -11,7 +11,7 @@ buildscript {
 
     dependencies {
         // The Android Gradle Plugin knows how to build native code with the NDK.
-        classpath 'com.android.tools.build:gradle:7.3.0'
+        classpath 'com.android.tools.build:gradle:9.1.0'
         classpath 'de.undercouch:gradle-download-task:4.1.2'
     }
 }