chore(deps): update dependency com.google.cloud:google-cloud-logging-servlet-initializer to v0.1.16-alpha (#145)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [com.google.cloud:google-cloud-logging-servlet-initializer](https://togithub.com/googleapis/java-logging-servlet-initializer) | `0.1.15-alpha` -> `0.1.16-alpha` | [![age](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-logging-servlet-initializer/0.1.16-alpha/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-logging-servlet-initializer/0.1.16-alpha/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-logging-servlet-initializer/0.1.16-alpha/compatibility-slim/0.1.15-alpha)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/com.google.cloud:google-cloud-logging-servlet-initializer/0.1.16-alpha/confidence-slim/0.1.15-alpha)](https://docs.renovatebot.com/merge-confidence/) |

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### Release Notes

<details>
<summary>googleapis/java-logging-servlet-initializer</summary>

### [`v0.1.16-alpha`](https://togithub.com/googleapis/java-logging-servlet-initializer/blob/HEAD/CHANGELOG.md#&#8203;0116-alpha-httpsgithubcomgoogleapisjava-logging-servlet-initializercomparev0115-alphav0116-alpha-2022-05-04)

[Compare Source](https://togithub.com/googleapis/java-logging-servlet-initializer/compare/v0.1.15-alpha...v0.1.16-alpha)

</details>

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samples/install-without-bom/pom.xml

@@ -28,7 +28,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-logging-servlet-initializer</artifactId>
-      <version>0.1.15-alpha</version>
+      <version>0.1.16-alpha</version>
     </dependency>
     <dependency>
       <groupId>junit</groupId>

samples/snippets/pom.xml

@@ -28,7 +28,7 @@
     <dependency>
       <groupId>com.google.cloud</groupId>
       <artifactId>google-cloud-logging-servlet-initializer</artifactId>
-      <version>0.1.15-alpha</version>
+      <version>0.1.16-alpha</version>
     </dependency>
 
     <dependency>