chore(deps): update appengine packages to v2.0.5 (#888)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.appengine:appengine-api-stubs](https://togithub.com/GoogleCloudPlatform/appengine-java-standard) | `2.0.4` -> `2.0.5` | [![age](https://badges.renovateapi.com/packages/maven/com.google.appengine:appengine-api-stubs/2.0.5/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.appengine:appengine-api-stubs/2.0.5/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.appengine:appengine-api-stubs/2.0.5/compatibility-slim/2.0.4)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.appengine:appengine-api-stubs/2.0.5/confidence-slim/2.0.4)](https://docs.renovatebot.com/merge-confidence/) |
| [com.google.appengine:appengine-testing](https://togithub.com/GoogleCloudPlatform/appengine-java-standard) | `2.0.4` -> `2.0.5` | [![age](https://badges.renovateapi.com/packages/maven/com.google.appengine:appengine-testing/2.0.5/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.appengine:appengine-testing/2.0.5/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.appengine:appengine-testing/2.0.5/compatibility-slim/2.0.4)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.appengine:appengine-testing/2.0.5/confidence-slim/2.0.4)](https://docs.renovatebot.com/merge-confidence/) |
| [com.google.appengine:appengine-api-1.0-sdk](https://togithub.com/GoogleCloudPlatform/appengine-java-standard) | `2.0.4` -> `2.0.5` | [![age](https://badges.renovateapi.com/packages/maven/com.google.appengine:appengine-api-1.0-sdk/2.0.5/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.appengine:appengine-api-1.0-sdk/2.0.5/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.appengine:appengine-api-1.0-sdk/2.0.5/compatibility-slim/2.0.4)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.appengine:appengine-api-1.0-sdk/2.0.5/confidence-slim/2.0.4)](https://docs.renovatebot.com/merge-confidence/) |

---

### Release Notes

<details>
<summary>GoogleCloudPlatform/appengine-java-standard</summary>

### [`v2.0.5`](https://togithub.com/GoogleCloudPlatform/appengine-java-standard/releases/v2.0.5)

[Compare Source](https://togithub.com/GoogleCloudPlatform/appengine-java-standard/compare/v2.0.4...v2.0.5)

v2.0.5

</details>

---

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pom.xml

@@ -459,7 +459,7 @@
       - google-api-java-client/google-api-client-assembly/android-properties (make the filenames match the version here)
       - Internally, update the default features.json file
     -->
-    <project.appengine.version>2.0.4</project.appengine.version>
+    <project.appengine.version>2.0.5</project.appengine.version>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <project.http.version>1.41.8</project.http.version>
     <project.jsr305.version>3.0.2</project.jsr305.version>