Update to KGP 2.0.0-Beta1 (tools/gradle-recipes)

Test: Updated
Bug: 313061502
Change-Id: I3acbc5ffb8705c476a51dbf096795388342a6b9b

convert-tool/app/src/main/kotlin/com/google/android/gradle_recipe/converter/converters/RecipeConverter.kt

@@ -42,7 +42,7 @@ val agpToGradleVersions = mapOf(
  * Current supported Kotlin plugin, later we add a
  * CLI argument to support more versions
  */
-const val kotlinPluginVersion = "1.9.20-RC"
+const val kotlinPluginVersion = "2.0.0-Beta1"
 
 /**
  * The compile SDK version for recipes

recipes.bzl

@@ -18,13 +18,13 @@ def recipe_test(
     test_scenarios = {
         "8.1.0": {
             "name": name + "_8_1_0",
-            "gradle_path": "$(location //tools/base/build-system:gradle-distrib-8.0)",
+            "gradle_path": "$(location //tools/base/build-system:gradle-distrib-8.1)",
             "manifest_repos": ["//tools/base/build-system/previous-versions:8.1.0"],
             "zip_repos": [],
             "data": [
                 "//prebuilts/studio/sdk:build-tools/33.0.1",
                 "//tools/base/build-system:android_platform_for_tests",
-                "//tools/base/build-system:gradle-distrib-8.0",
+                "//tools/base/build-system:gradle-distrib-8.1",
             ],
         },
         "ToT": {
@@ -37,7 +37,7 @@ def recipe_test(
                 "//prebuilts/studio/sdk:build-tools/latest",
                 "//tools/base/build-system:android_platform_for_tests",
                 "//tools/base/build-system:gradle-distrib",
-                "//tools/base/build-system:gradle-distrib-8.0",
+                "//tools/base/build-system:gradle-distrib-8.1",
                 "version_mappings.txt",
             ],
         },

version_mappings.txt

@@ -1,3 +1,6 @@
 # mapping of AGP versions to Gradle Versions, separated by ';'
-8.1.0;8.0
+# Note: For AGP 8.1, minimum required Gradle version is 8.0, but because of
+# https://github.com/gradle/gradle/issues/21436, we need to use Gradle 8.1 to be able to run against
+# KGP 2.0+.
+8.1.0;8.1
 8.2.0-alpha13;8.1