chore(deps): update dependency com.google.cloud.tools:appengine-gradle-plugin to v2.4.2 (#5905)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud.tools:appengine-gradle-plugin](https://togithub.com/GoogleCloudPlatform/app-gradle-plugin) | `2.2.0` -> `2.4.2` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud.tools:appengine-gradle-plugin/2.4.2/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud.tools:appengine-gradle-plugin/2.4.2/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud.tools:appengine-gradle-plugin/2.4.2/compatibility-slim/2.2.0)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud.tools:appengine-gradle-plugin/2.4.2/confidence-slim/2.2.0)](https://docs.renovatebot.com/merge-confidence/) |

---

### Release Notes

<details>
<summary>GoogleCloudPlatform/app-gradle-plugin</summary>

### [`v2.4.2`](https://togithub.com/GoogleCloudPlatform/app-gradle-plugin/blob/master/CHANGELOG.md#&#8203;242)

##### Changed

-   Update to appengine-plugins-core 0.9.5 ([#&#8203;405](../../pull/405))

### [`v2.4.1`](https://togithub.com/GoogleCloudPlatform/app-gradle-plugin/blob/master/CHANGELOG.md#&#8203;241)

##### Fixed

-   Fixed bug when using `plugins` block in `build.gradle` ([#&#8203;388](../../pull/388))

### [`v2.4.0`](https://togithub.com/GoogleCloudPlatform/app-gradle-plugin/blob/master/CHANGELOG.md#&#8203;240)

##### Added

-   `appengine.tools.verbosity` option for defining gcloud log verbosity ([#&#8203;384](../../pull/384))

### [`v2.3.0`](https://togithub.com/GoogleCloudPlatform/app-gradle-plugin/blob/master/CHANGELOG.md#&#8203;230)

##### Changed

-   Update to appengine-plugins-core 0.9.0 ([#&#8203;377](../../pull/377))
    -   Includes support for binary artifacts for app.yaml based deployments ([appengine-plugins-core:#&#8203;840](https://togithub.com/GoogleCloudPlatform/appengine-plugins-core/issues/840))

</details>

---

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Author: renovate-bot

appengine-java8/bigtable/build.gradle

@@ -18,7 +18,7 @@ buildscript {      // Configuration for building
     mavenCentral()
   }
   dependencies {
-    classpath 'com.google.cloud.tools:appengine-gradle-plugin:2.2.0'
+    classpath 'com.google.cloud.tools:appengine-gradle-plugin:2.4.2'
     classpath 'org.akhikhl.gretty:gretty:+'
   }
 }

appengine-java8/endpoints-v2-backend/build.gradle

@@ -21,7 +21,7 @@ buildscript {
     // [START endpoints_plugin]
     classpath 'com.google.cloud.tools:endpoints-framework-gradle-plugin:2.0.1'
     // [END endpoints_plugin]
-    classpath 'com.google.cloud.tools:appengine-gradle-plugin:2.2.0'
+    classpath 'com.google.cloud.tools:appengine-gradle-plugin:2.4.2'
   }
 }
 

appengine-java8/endpoints-v2-guice/build.gradle

@@ -19,7 +19,7 @@ buildscript {
 
   dependencies {
     classpath 'com.google.cloud.tools:endpoints-framework-gradle-plugin:1.0.3'
-    classpath 'com.google.cloud.tools:appengine-gradle-plugin:2.2.0'
+    classpath 'com.google.cloud.tools:appengine-gradle-plugin:2.4.2'
   }
 }
 

appengine-java8/endpoints-v2-migration/build.gradle

@@ -20,7 +20,7 @@ buildscript {    // Configuration for building
   }
   dependencies {
     // App Engine Gradle plugin
-    classpath 'com.google.cloud.tools:appengine-gradle-plugin:2.2.0'
+    classpath 'com.google.cloud.tools:appengine-gradle-plugin:2.4.2'
 
     // Endpoints Frameworks Gradle plugin
     classpath 'com.google.cloud.tools:endpoints-framework-gradle-plugin:1.0.3'

appengine-java8/endpoints-v2-skeleton/build.gradle

@@ -20,7 +20,7 @@ buildscript {
 
   dependencies {
     classpath 'com.google.cloud.tools:endpoints-framework-gradle-plugin:1.0.3'
-    classpath 'com.google.cloud.tools:appengine-gradle-plugin:2.2.0'
+    classpath 'com.google.cloud.tools:appengine-gradle-plugin:2.4.2'
   }
 }
 // [END build_script]

appengine-java8/helloworld/build.gradle

@@ -18,7 +18,7 @@ buildscript {    // Configuration for building
     mavenCentral()
   }
   dependencies {
-    classpath 'com.google.cloud.tools:appengine-gradle-plugin:2.2.0' // If a newer version is available, use it
+    classpath 'com.google.cloud.tools:appengine-gradle-plugin:2.4.2' // If a newer version is available, use it
   }
 }
 

flexible/helloworld/build.gradle

@@ -18,7 +18,7 @@ buildscript {      // Configuration for building
     mavenCentral()
   }
   dependencies {
-    classpath 'com.google.cloud.tools:appengine-gradle-plugin:2.2.0'
+    classpath 'com.google.cloud.tools:appengine-gradle-plugin:2.4.2'
     classpath 'org.akhikhl.gretty:gretty:+'
   }
 }