build(deps): update dependency org.codehaus.mojo:animal-sniffer-maven…

…-plugin to v1.21 (#416)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
| [org.codehaus.mojo:animal-sniffer-maven-plugin](https://www.mojohaus.org/animal-sniffer) ([source](https://togithub.com/mojohaus/animal-sniffer)) | `1.20` -> `1.21` | [![age](https://badges.renovateapi.com/packages/maven/org.codehaus.mojo:animal-sniffer-maven-plugin/1.21/age-slim)](https://docs.renovatebot.com/merge-confidence/) | [![adoption](https://badges.renovateapi.com/packages/maven/org.codehaus.mojo:animal-sniffer-maven-plugin/1.21/adoption-slim)](https://docs.renovatebot.com/merge-confidence/) | [![passing](https://badges.renovateapi.com/packages/maven/org.codehaus.mojo:animal-sniffer-maven-plugin/1.21/compatibility-slim/1.20)](https://docs.renovatebot.com/merge-confidence/) | [![confidence](https://badges.renovateapi.com/packages/maven/org.codehaus.mojo:animal-sniffer-maven-plugin/1.21/confidence-slim/1.20)](https://docs.renovatebot.com/merge-confidence/) |

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pom.xml

@@ -415,7 +415,7 @@
       <plugin>
         <groupId>org.codehaus.mojo</groupId>
         <artifactId>animal-sniffer-maven-plugin</artifactId>
-        <version>1.20</version>
+        <version>1.21</version>
         <executions>
           <execution>
             <id>java8</id>