chore(deps): update dependency org.apache.maven.plugins:maven-compile…

…r-plugin to v3.12.0 (#570)

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This PR contains the following updates:

| Package | Change | Age | Adoption | Passing | Confidence |
|---|---|---|---|---|---|
|
[org.apache.maven.plugins:maven-compiler-plugin](https://maven.apache.org/plugins/)
| `3.11.0` -> `3.12.0` |
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generator/pom.xml

@@ -98,7 +98,7 @@
             <plugin>
                 <groupId>org.apache.maven.plugins</groupId>
                 <artifactId>maven-compiler-plugin</artifactId>
-                <version>3.11.0</version>
+                <version>3.12.0</version>
                 <configuration>
                     <source>1.8</source>
                     <target>1.8</target>