Bump org.apache.maven:maven-plugin-api (#1300)

Bumps [org.apache.maven:maven-plugin-api](https://github.com/apache/maven) from 3.9.3 to 3.9.4.
- [Release notes](https://github.com/apache/maven/releases)
- [Commits](apache/maven@maven-3.9.3...maven-3.9.4)

---
updated-dependencies:
- dependency-name: org.apache.maven:maven-plugin-api
  dependency-type: direct:production
  update-type: version-update:semver-patch
...

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Co-authored-by: dependabot[bot] <49699333+dependabot[bot]@users.noreply.github.com>

plugins/maven/graphql-java-codegen-maven-plugin/pom.xml

@@ -56,7 +56,7 @@
     </ciManagement>
 
     <properties>
-        <version.maven-plugin-api>3.9.3</version.maven-plugin-api>
+        <version.maven-plugin-api>3.9.4</version.maven-plugin-api>
         <version.maven-core>3.9.4</version.maven-core>
         <version.maven-plugin-annotations>3.9.0</version.maven-plugin-annotations>
         <version.maven-plugin-plugin>3.9.0</version.maven-plugin-plugin>