build(deps): update dependency org.apache.maven.plugins:maven-shade-plugin to v3.6.0 (#2837)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
|
[org.apache.maven.plugins:maven-shade-plugin](https://maven.apache.org/plugins/)
| `3.5.3` -> `3.6.0` |
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Author: renovate-bot

gapic-generator-java/pom.xml

@@ -351,7 +351,7 @@
       <plugin>
         <groupId>org.apache.maven.plugins</groupId>
         <artifactId>maven-shade-plugin</artifactId>
-        <version>3.5.3</version>
+        <version>3.6.0</version>
         <executions>
           <execution>
             <phase>package</phase>